Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "wDD4XugmHIvx3KMT",
  "meta": {
    "instanceId": "149cdf730f0c143663259ddc6124c9c26e824d8d2d059973b871074cf4bda531"
  },
  "name": "Analyze Screenshots with AI",
  "tags": [],
  "nodes": [
    {
      "id": "6d7f34b8-6203-4512-a428-7b5a18c63db6",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        240,
        1100
      ],
      "parameters": {
        "width": 373.2796418305297,
        "height": 381.1230421279239,
        "content": "## Setup \n**For Testing use the Setup node to put in test name & url.**\n\nIf you want to use this workflow in production, you can expand it to load data from other sources like a DB or Google Sheet"
      },
      "typeVersion": 1
    },
    {
      "id": "ae568c65-e8f6-45bb-9c96-a870da1fc7d6",
      "name": "Setup",
      "type": "n8n-nodes-base.set",
      "position": [
        360,
        1320
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "website_name",
              "value": "=n8n"
            },
            {
              "name": "url",
              "value": "https://n8n.io/"
            }
          ]
        },
        "options": {}
      },
      "typeVersion": 2
    },
    {
      "id": "ca9f0357-a596-4453-b351-fdd8d47c81ad",
      "name": "URLbox API Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        780,
        1120
      ],
      "parameters": {
        "url": "https://api.urlbox.io/v1/render/sync",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "url",
              "value": "={{ $json.url }}"
            },
            {
              "name": "full_page",
              "value": true
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorizat...

Output:
The workflow has a broken data flow. The node 'URLbox API Request' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'URLbox API Request'.

**Impact**: Data from 'URLbox API Request' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'URLbox API Request' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "URLbox API Request": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'URLbox API Request' to the workflow.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Expression Reference Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "cb484ba7b742928a2048bf8829668bed5b5ad9787579adea888f05980292a4a7",
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "86ddd018-3d6b-46b9-aa93-dedd6c6b5076",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        -880,
        360
      ],
      "webhookId": "a9668bb8-bbe8-418a-b5c9-ff7dd431244f",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1
    },
    {
      "id": "a5ba5090-8e3b-4408-82df-92d2c524039e",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        -680,
        360
      ],
      "parameters": {
        "options": {
          "systemMessage": "You are a cybersecurity expert trained on MITRE ATT&CK and enterprise incident response. Your job is to:\n1. Extract TTP information from SIEM data.\n2. Provide actionable remediation steps tailored to the alert.\n3. Cross-reference historical patterns and related alerts.\n4. Recommend external resources for deeper understanding.\n\nEnsure that:\n- TTPs are tagged with the tactic, technique name, and technique ID.\n- Remediation steps are specific and actionable.\n- Historical data includes related alerts and notable trends.\n- External links are relevant to the observed behavior.\n"
        }
      },
      "typeVersion": 1.7
    },
    {
      "id": "67c52944-b616-4ea6-9507-e9fb6fcdbe2b",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -740,
        580
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "QpFZ2EiM3WGl6Zr3",
          "name": "Marketing OpenAI"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "55f6c16a-51ed-45e4-a1ab-aaaf1d7b5733",
      "name": "Split Out",
      "type": "n8n-nodes-base.splitOut",
      "pos...

Output:
In node 'OpenAI Chat Model1', the parameter 'model' contains an expression that references undefined data.

**Faulty Expression**: `={{ $items[999].json.value }}`
**Original Value**: `gpt-4o`

**Root Cause**: The expression references a field, node, or variable that doesn't exist in the data flow.

**Debugging Steps**:
1. Check the output of previous nodes to verify available fields
2. Use the Expression Editor to test expressions interactively
3. Add a Set node before this one to inspect available data
4. Use optional chaining for potentially undefined fields: `$json.field?.subfield`

**Best Practice**: Always validate data availability before using expressions.

Fix the expression in 'OpenAI Chat Model1' parameter 'model'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Rate Limiting Risk

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "nodes": [
    {
      "name": "Simplify Result",
      "type": "n8n-nodes-base.set",
      "position": [
        680,
        100
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "Content",
              "value": "={{$json[\"full_text\"].replace(/(?:https?|ftp):\\/\\/[\\n\\S]+/g, '')}}"
            },
            {
              "name": "Author",
              "value": "={{$json[\"user\"][\"name\"]}} (@{{$json[\"user\"][\"screen_name\"]}})"
            },
            {
              "name": "Created",
              "value": "={{new Date($json[\"created_at\"]).toISOString()}}"
            },
            {
              "name": "URL",
              "value": "=https://twitter.com/{{$json[\"user\"][\"screen_name\"]}}/status/{{$json[\"id_str\"]}}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1
    },
    {
      "name": "Store in Strapi",
      "type": "n8n-nodes-base.strapi",
      "position": [
        1780,
        100
      ],
      "parameters": {
        "columns": "Content,Author,Created,URL",
        "operation": "create",
        "contentType": "posts"
      },
      "credentials": {
        "strapiApi": {
          "id": "136",
          "name": "Strapi Demo"
        }
      },
      "typeVersion": 1
    },
    {
      "name": "Every 30 Minutes",
      "type": "n8n-nodes-base.interval",
      "position": [
        240,
        100
      ],
      "parameters": {
        "unit": "minutes",
        "interval": 30
      },
      "typeVersion": 1
    },
    {
      "name": "Is Retweet or Old?",
      "type": "n8n-nodes-base.if",
      "position": [
        900,
        100
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$json[\"Content\"]}}",
              "value2": "RT @",
              "operation": "startsWith"
            }
          ],
          "dateTime":...

Output:
This workflow may encounter rate limiting issues when processing large batches of data.

**Common Rate Limit Errors**:
- HTTP 429 Too Many Requests
- HTTP 503 Service Unavailable
- API-specific rate limit messages

**Root Cause**: The workflow makes too many API requests in a short time period without delays.

**Solutions**:

1. **Add Wait Nodes**: Insert a Wait node between API calls
```json
{
  "parameters": {"amount": 1, "unit": "seconds"},
  "name": "Rate Limit Delay",
  "type": "n8n-nodes-base.wait"
}
```

2. **Enable Retry on Fail**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
```

3. **Use Batch Processing**: Split items into smaller batches with delays

4. **Implement Exponential Backoff**: Increase wait times with each retry

**Best Practice**: Always check API documentation for rate limits and implement appropriate throttling.

Add rate limiting protection with Wait nodes and retry logic.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "cmGsNvW9bEORABdo",
  "meta": {
    "instanceId": "15c09ee9508dd818e298e675375571ba4b871bbb8c420fd01ac9ed7c58622669"
  },
  "name": "Bitrix24 Chatbot Application Workflow example with Webhook Integration",
  "tags": [
    {
      "id": "5YZ9E6AmGZn6WTMa",
      "name": "Tech demo",
      "createdAt": "2024-12-28T09:13:02.965Z",
      "updatedAt": "2024-12-28T09:13:02.965Z"
    },
    {
      "id": "hEvnK1kMYTPrL3vs",
      "name": "Bitrix24",
      "createdAt": "2025-01-04T16:12:36.741Z",
      "updatedAt": "2025-01-04T16:12:36.741Z"
    },
    {
      "id": "yKS9RGKLuFUhYFIE",
      "name": "Chatbot",
      "createdAt": "2025-01-04T16:12:36.757Z",
      "updatedAt": "2025-01-04T16:12:36.757Z"
    }
  ],
  "nodes": [
    {
      "id": "ddd802bb-0da0-474d-b1e9-74f247e603e0",
      "name": "Bitrix24 Handler",
      "type": "n8n-nodes-base.webhook",
      "position": [
        0,
        0
      ],
      "webhookId": "c3ae607d-41f0-42bc-b669-c2c77936d443",
      "parameters": {
        "path": "bitrix24/handler.php",
        "options": {},
        "httpMethod": "POST",
        "responseMode": "responseNode"
      },
      "typeVersion": 1
    },
    {
      "id": "5676a53e-6758-4ad5-ace6-e494fa10b6c3",
      "name": "Credentials",
      "type": "n8n-nodes-base.set",
      "position": [
        200,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "030f8f90-2669-4c20-9eab-c572c4b7c70c",
              "name": "CLIENT_ID",
              "type": "string",
              "value": "local.6779636e712043.37129431"
            },
            {
              "id": "de9bbb7a-b782-4540-b259-527625db8490",
              "name": "CLIENT_SECRET",
              "type": "string",
              "value": "dTzUfBoTFLxNhuzc1zsnDbCeii98ZaE5By4aQPQEOxLJAS9y6i"
            },
            {
              "id": "86b7aff7-1e25-4b12-a366-23cf34e5a405",
              "name": "application_t...

Output:
The workflow has a broken data flow. The node 'Process Message' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'Process Message'.

**Impact**: Data from 'Process Message' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'Process Message' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "Process Message": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'Process Message' to the workflow.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Data Type Mismatch

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "nodes": [
    {
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        880,
        540
      ],
      "parameters": {
        "content": "## Edit your own prompt \u2b07\ufe0f\n"
      },
      "typeVersion": 1
    },
    {
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -380,
        580
      ],
      "parameters": {
        "content": "## Filter comments and customize your trigger words \u2b07\ufe0f"
      },
      "typeVersion": 1
    },
    {
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -120,
        560
      ],
      "parameters": {
        "content": "## Replace your gitlab URL and token \u2b07\ufe0f"
      },
      "typeVersion": 1
    },
    {
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -540,
        760
      ],
      "webhookId": "6cfd2f23-6f45-47d4-9fe0-8f6f1c05829a",
      "parameters": {
        "path": "e21095c0-1876-4cd9-9e92-a2eac737f03e",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 1.1
    },
    {
      "name": "Code",
      "type": "n8n-nodes-base.code",
      "position": [
        720,
        540
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "// Loop over input items and add a new field called 'myNewField' to the JSON of each one\nvar diff = $input.item.json.gitDiff\n\nlet lines = diff.trimEnd().split('\\n');\n\nlet originalCode = '';\nlet newCode = '';\n\nlines.forEach(line => {\n console.log(line)\n if (line.startsWith('-')) {\n originalCode += line + \"\\n\";\n } else if (line.startsWith('+')) {\n newCode += line + \"\\n\";\n } else {\n originalCode += line + \"\\n\";\n newCode += line + \"\\n\";\n }\n});\n\nreturn {\n originalCode:originalCode,\n newCode:newCode\n};\n\n"
      },
      "typeVersion": 2
    },
    {
      "name": "Split Out1",
      "type": "...

Output:
The node 'Split Out1' has a data type mismatch in its parameters.

**Issue**: A field expected a number but received a string value.

**Common Causes**:
1. Expression returns string instead of number
2. JSON parsing preserves string types for numeric values
3. Upstream node outputs different data types than expected

**Solutions**:

1. **Type Conversion in Expression**:
```javascript
// Convert string to number
{ parseInt($json.stringValue) }
{ parseFloat($json.decimalString) }
{ Number($json.value) }
```

2. **Use Code Node for Transformation**:
```javascript
return items.map(item => {
  item.json.numericField = Number(item.json.stringField);
  return item;
});
```

3. **Validate Data Types**:
- Use IF node to check types before processing
- Add error handling for invalid types

**Best Practice**: Always validate and transform data types explicitly when passing data between nodes.

Fix data type conversion in 'Split Out1'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Missing Credentials

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "cb484ba7b742928a2048bf8829668bed5b5ad9787579adea888f05980292a4a7"
  },
  "nodes": [
    {
      "id": "8920dc6e-b2fb-4446-8cb3-f3f6d626dcb3",
      "name": "Linear Trigger",
      "type": "n8n-nodes-base.linearTrigger",
      "position": [
        420,
        360
      ],
      "webhookId": "a02faf62-684f-44bb-809f-e962c9ede70d",
      "parameters": {
        "teamId": "7a330c36-4b39-4bf1-922e-b4ceeb91850a",
        "resources": [
          "issue"
        ],
        "authentication": "oAuth2"
      },
      "credentials": {
        "linearOAuth2Api": {
          "id": "02MqKUMdPxr9t3mX",
          "name": "Nik's Linear Creds"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "61214884-62f9-4a00-9517-e2d51b44d0ae",
      "name": "Only tickets that need to be classified",
      "type": "n8n-nodes-base.filter",
      "position": [
        1000,
        360
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "bc3a756d-b2b6-407b-91c9-a1cd9da004e0",
              "operator": {
                "type": "string",
                "operation": "notContains"
              },
              "leftValue": "={{ $('Linear Trigger').item.json.data.description }}",
              "rightValue": "Add a description here"
            },
            {
              "id": "f3d8d0fc-332d-41a6-aef8-1f221bf30c0e",
              "operator": {
                "name": "filter.operator.equals",
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $('Linear Trigger').item.json.data.state.id }}",
              "rightValue": "6b9a8eec-82dc-453a-878b-50f4c98d3e53"
            },
            {
              "id": "9cdb55b2-3ca9-43bd-84...

Output:
The node 'OpenAI' (type: @n8n/n8n-nodes-langchain.openAi) requires credentials but the 'credentials' configuration is missing.

**Root Cause**: The credentials object was not defined for this node.

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "openAiApi": {
    "id": "VQtv7frm7eLiEDnd",
    "name": "OpenAi account 7"
  }
}
```

**Best Practice**: Always verify credentials are properly configured before deploying workflows. Use n8n's credential management system to store sensitive data securely.

Add credentials configuration to the 'OpenAI' node.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "127",
  "name": "Create, update, and get a profile in Humantic AI",
  "nodes": [
    {
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        290,
        300
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "name": "Humantic AI",
      "type": "n8n-nodes-base.humanticAi",
      "position": [
        490,
        300
      ],
      "parameters": {
        "userId": "https://www.linkedin.com/in/harshil1712/"
      },
      "credentials": {
        "humanticAiApi": "humantic"
      },
      "typeVersion": 1
    },
    {
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        690,
        300
      ],
      "parameters": {
        "url": "",
        "options": {},
        "responseFormat": "file"
      },
      "typeVersion": 1
    },
    {
      "name": "Humantic AI1",
      "type": "n8n-nodes-base.humanticAi",
      "position": [
        890,
        300
      ],
      "parameters": {
        "userId": "={{$node[\"Humantic AI\"].json[\"results\"][\"userid\"]}}",
        "operation": "update",
        "sendResume": true
      },
      "credentials": {
        "humanticAiApi": "humantic"
      },
      "typeVersion": 1
    },
    {
      "name": "Humantic AI2",
      "type": "n8n-nodes-base.humanticAi",
      "position": [
        1090,
        300
      ],
      "parameters": {
        "userId": "={{$node[\"Humantic AI\"].json[\"results\"][\"userid\"]}}",
        "options": {
          "persona": [
            "hiring"
          ]
        },
        "operation": "get"
      },
      "credentials": {
        "humanticAiApi": "humantic"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {},
  "connections": {
    "Humantic AI": {
      "main": [
        [
          {
            "node": "HTTP Request",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "HTTP Request"...

Output:
The workflow has a broken data flow. The node 'On clicking 'execute'' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'On clicking 'execute''.

**Impact**: Data from 'On clicking 'execute'' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'On clicking 'execute'' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "On clicking 'execute'": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'On clicking 'execute'' to the workflow.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Syntax Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "26ba763460b97c249b82942b23b6384876dfeb9327513332e743c5f6219c2b8e"
  },
  "nodes": [
    {
      "id": "d61d8ff3-532a-4b0d-a5a7-e02d2e79ddce",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        2660,
        480
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "b6d5c1cf-b4a1-4901-b001-0c375747ee63",
      "name": "No Operation, do nothing",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1660,
        520
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "f4e08e32-bb96-4b5d-852e-26ad6fec3c8c",
      "name": "Add to Messages Stack",
      "type": "n8n-nodes-base.redis",
      "position": [
        1340,
        200
      ],
      "parameters": {
        "list": "=chat-buffer:{{ $json.From }}",
        "tail": true,
        "operation": "push",
        "messageData": "={{ $json.Body }}"
      },
      "credentials": {
        "redis": {
          "id": "zU4DA70qSDrZM1El",
          "name": "Redis account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "181ae99e-ebe7-4e99-b5a5-999acc249621",
      "name": "Should Continue?",
      "type": "n8n-nodes-base.if",
      "position": [
        1660,
        360
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "ec39573f-f92a-4fe4-a832-0a137de8e7d0",
              "operator": {
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $('Get Latest Messag...

Output: The JSON is invalid because there is a trailing comma before a closing brace. Remove the extra comma.

Remove the trailing comma before the closing brace.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "nodes": [
    {
      "id": "6ea4e702-1af8-407b-b653-964a519db1c2",
      "name": "Basic LLM Chain",
      "type": "@n8n/n8n-nodes-langchain.chainLlm",
      "position": [
        1560,
        -360
      ],
      "parameters": {
        "text": "=You are a highly skilled news categorizer, specializing in indentifying interesting stuff from Hacker News front-page headlines.\n\nYou are provided with JSON data containing a list of dates and their corresponding top headlines from the Hacker News front page. Each headline will also include a URL linking to the original article or discussion. Importantly, the dates provided will be the SAME DAY across MULTIPLE YEARS (e.g., January 1st, 2023, January 1st, 2022, January 1st, 2021, etc.). You need to indentify key headlines and also analyze how the tech landscape has evolved over the years, as reflected in the headlines for this specific day.\n\nYour task is to indentify top 10-15 headlines from across the years from the given json data and return in Markdown formatted bullet points categorizing into themes and adding markdown hyperlinks to the source URL with Prefixing Year before the headline. Follow the Output Foramt Mentioned.\n\n**Input Format:**\n\n```json\n[\n {\n \"headlines\": [\n \"Headline 1 Title [URL1]\",\n \"Headline 2 Title [URL2]\",\n \"Headline 3 Title [URL3]\",\n ...\n ]\n \"date\": \"YYYY-MM-DD\",\n },\n {\n \"headlines\": [\n \"Headline 1 Title [URL1]\",\n \"Headline 2 Title [URL2]\",\n ...\n ]\n \"date\": \"YYYY-MM-DD\",\n },\n ...\n]\n```\n\n**Output Format In Markdown**\n\n```\n# HN Lookback <FullMonthName-DD> | <start YYYY> to <end YYYY> \n\n## [Theme 1]\n- YYYY [Headline 1](URL1)\n- YYYY [Headline 2](URL2)\n...\n\n## [Theme 2]\n- YYYY [Headline 1](URL1)\n- YYYY [Headline 2](URL2)\n...\n\n... \n\n## <this is optional>\n<if any interesing ternds emerge mention them in oneline>\n```\n\n**Here is the Json data for Hackernews Headlines across the years**\n\n```\n{{ JSON.stringify($json.data) }}\n```...

Output:
The workflow has a broken data flow. The node 'CleanUpYearList' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'CleanUpYearList'.

**Impact**: Data from 'CleanUpYearList' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'CleanUpYearList' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "CleanUpYearList": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'CleanUpYearList' to the workflow.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Expression Reference Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9"
  },
  "nodes": [
    {
      "id": "f55b3110-f960-4d89-afba-d47bc58102eb",
      "name": "Twilio Trigger",
      "type": "n8n-nodes-base.twilioTrigger",
      "position": [
        100,
        180
      ],
      "webhookId": "bfc8f587-8183-46f8-9e76-3576caddf8c0",
      "parameters": {
        "updates": [
          "com.twilio.messaging.inbound-message.received"
        ]
      },
      "credentials": {
        "twilioApi": {
          "id": "TJv4H4lXxPCLZT50",
          "name": "Twilio account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "8472f5b0-329f-45ac-b35f-c42558daa7c7",
      "name": "OpenAI Chat Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1140,
        1360
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "4b3e8a26-c808-46e5-bbcf-2e1279989a0b",
      "name": "Find Follow-Up Candidates",
      "type": "n8n-nodes-base.airtable",
      "position": [
        720,
        1240
      ],
      "parameters": {
        "base": {
          "__rl": true,
          "mode": "list",
          "value": "appO2nHiT9XPuGrjN",
          "cachedResultUrl": "https://airtable.com/appO2nHiT9XPuGrjN",
          "cachedResultName": "Twilio-Scheduling-Agent"
        },
        "table": {
          "__rl": true,
          "mode": "list",
          "value": "tblokH7uw63RpIlQ0",
          "cachedResultUrl": "https://airtable.com/appO2nHiT9XPuGrjN/tblokH7uw63RpIlQ0",
          "cachedResultName": "Lead Tracker"
        },
        "options": {},
        "operation": "search",
        "filterByFormula": "=AND(\n {appointment_id} = '',\n {status} != 'STOP',\n {followup_count} < 3,\n DATETIME_DIFF(TODAY(), {last_followup_at}, '...

Output:
In node 'Sticky Note5', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `## Step 1. Wait For Customer SMS
[Read more about Twilio trigger](https://docs.n8n.io/integrations/builtin/trigger-nodes/n8n-nodes-base.twiliotrigger)

For this workflow, we'll use the twilio SMS trigger to receive enquiries from customers looking to book a PC or laptop repair.

Since we'll be working with SMS, we'll have a check to see if the customer wishes to STOP any further follow-up messages. This is an optional step that we'll get to later.`

**Root Cause**: The expression references a field, node, or variable that doesn't exist in the data flow.

**Debugging Steps**:
1. Check the output of previous nodes to verify available fields
2. Use the Expression Editor to test expressions interactively
3. Add a Set node before this one to inspect available data
4. Use optional chaining for potentially undefined fields: `$json.field?.subfield`

**Best Practice**: Always validate data availability before using expressions.

Fix the expression in 'Sticky Note5' parameter 'content'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Syntax Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "Nfh274NHoDy7pB4M",
  "meta": {
    "instanceId": "00493e38fecfc163cb182114bc2fab90114038eb9aad665a7a752d076920d3d5",
    "templateCredsSetupCompleted": true
  },
  "name": "Integrating AI with Open-Meteo API for Enhanced Weather Forecasting",
  "tags": [],
  "nodes": [
    {
      "id": "80debfe0-c591-4ba1-aca1-068adac62aa9",
      "name": "When chat message received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        100,
        -300
      ],
      "webhookId": "4a44e974-db62-4727-9913-12a22bc88e01",
      "parameters": {
        "public": true,
        "options": {
          "title": "N8N \ud83d\udc4b",
          "subtitle": "Weather Assistant: Example of Tools Using ChatGPT",
          "allowFileUploads": false,
          "loadPreviousSession": "memory"
        },
        "initialMessages": "Type like this: Weather Forecast for the Next 7 Days in S\u00e3o Paulo"
      },
      "typeVersion": 1.1
    },
    {
      "id": "ec375027-1c0d-438b-9fca-7bc4fbef2479",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        420,
        -60
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "bhRvwBXztNmJVObo",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "bd2f5967-8188-4b1f-9255-8008870aaf7b",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -540,
        -640
      ],
      "parameters": {
        "color": 5,
        "width": 500,
        "height": 720,
        "content": "## Integrating AI with Open-Meteo API for Enhanced Weather Forecasting\n\n## Use case\n\n### Workshop\n\nWe are using this workflow in our workshops to teach how to use Tools a.k.a functions with artificial intelligence. In this specific case, we will use a generic \"AI Agent\" node to illustrate that it could use other m...

Output: The JSON is invalid because it is missing a closing brace '}' at the end of the file. Add the missing '}' to close the workflow object.

Add a closing brace '}' at the end of the JSON.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "26ba763460b97c249b82942b23b6384876dfeb9327513332e743c5f6219c2b8e"
  },
  "nodes": [
    {
      "id": "abccacce-bbdc-428e-94e0-19996c5bfe02",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1720,
        160
      ],
      "parameters": {
        "color": 7,
        "width": 319.5392879244982,
        "height": 218.88813194060202,
        "content": "### AI agent that can scrape webpages\nRemake of https://n8n.io/workflows/2006-ai-agent-that-can-scrape-webpages/\n\n**Changes**:\n* Replaces Execute Workflow Tool and Subworkflow\n* Replaces Response Formatting"
      },
      "typeVersion": 1
    },
    {
      "id": "9fc05c79-5a2d-4ac4-a4f5-32b9c1b385e1",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1340,
        340
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "45c9bdaf-d51e-4026-8911-4b04c5473b06",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1720,
        560
      ],
      "parameters": {
        "color": 7,
        "width": 365.9021913627245,
        "height": 245.35379866205295,
        "content": "### Allow your AI to call an API to fetch data\nRemake of https://n8n.io/workflows/2094-allow-your-ai-to-call-an-api-to-fetch-data/\n\n**Changes**:\n* Replaces Execute Workflow Tool and Subworkflow\n* Replaces Manual Query Params Definitions\n* Replaces Response Formatting"
      },
      "typeVersion": 1
    },
    {
      "id": "bc1754e6-01f4-4561-8814-c08feb45acec",
      "name": "OpenAI Chat Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1340,
        740
      ],
      "parameters": {
        "options": {}
    ...

Output:
The workflow has a broken data flow. The node 'Webscraper Tool' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'Webscraper Tool'.

**Impact**: Data from 'Webscraper Tool' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'Webscraper Tool' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "Webscraper Tool": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'Webscraper Tool' to the workflow.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Syntax Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "cb484ba7b742928a2048bf8829668bed5b5ad9787579adea888f05980292a4a7"
  },
  "nodes": [
    {
      "id": "f1142274-898d-43da-a7ff-2b2e03f2dc73",
      "name": "Execute Workflow Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        1220,
        840
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "1f407421-2dd6-4e0c-bc74-cfb291e475ed",
      "name": "Query Confluence",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1640,
        840
      ],
      "parameters": {
        "url": "https://n8n-labs.atlassian.net/wiki/rest/api/search",
        "options": {},
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth",
        "queryParameters": {
          "parameters": [
            {
              "name": "cql",
              "value": "=text ~ \"{{ $json.query }}\""
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "accept",
              "value": "application/json"
            }
          ]
        }
      },
      "credentials": {
        "httpBasicAuth": {
          "id": "B1Cj4Uh9d9WKWxBO",
          "name": "Confluence API Key"
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "f1ab7e79-6bd8-4b87-b6dc-96f9d46cdd16",
      "name": "Return Tool Response",
      "type": "n8n-nodes-base.set",
      "position": [
        2040,
        840
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "c1d46e59-9340-43f3-bc2a-fbd4e0def74f",
              "name": "response",
              "type": "string",
              "value": "=\"Title\": \"{{ $json.results[0].content.title }}\"\n\"Link\": \"{{ $json._links.base }}{{ $json.results[0].content._links.webui }}\"\n\"Content\": {{ $json[\...

Output: The JSON is invalid because there is a trailing comma before a closing brace. Remove the extra comma.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Expression Reference Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "Z5OgwYfK4reCTv9y",
  "meta": {
    "instanceId": "c59c4acfed171bdc864e7c432be610946898c3ee271693e0303565c953d88c1d"
  },
  "name": "LINE Assistant with Google Calendar and Gmail Integration",
  "tags": [],
  "nodes": [
    {
      "id": "9e1e1c11-f406-47de-8f65-9669cf078d3d",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        -1140,
        120
      ],
      "parameters": {
        "text": "={{ $json.body.events[0].message.text }}",
        "options": {
          "systemMessage": "=You are a helpful assistant.\n\nHere is the current date {{ $now }}"
        },
        "promptType": "define"
      },
      "typeVersion": 1.7
    },
    {
      "id": "fa722820-8804-47da-bb21-02c0d2b5d665",
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        -1020,
        580
      ],
      "parameters": {
        "sessionKey": "={{ $node.NonExistentNode.json.data }}",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3
    },
    {
      "id": "5149b91a-5934-4037-a444-dfdb93d0cd16",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -1180,
        580
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1
    },
    {
      "id": "211a120d-d65f-4708-adc2-66dc8f4a40d6",
      "name": "Wikipedia",
      "type": "@n8n/n8n-nodes-langchain.toolWikipedia",
      "position": [
        -360,
        380
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "0e03137d-0300-47a4-bbd8-03c87c93d6e2",
      "name": "OpenAI",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        -780,
        120
      ],
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini",
          "cachedResultName": "GPT-4O-MINI"
        },
        "options...

Output:
In node 'Window Buffer Memory', the parameter 'sessionKey' contains an expression that references undefined data.

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `={{ $json.body.events[0].source.userId }}`

**Root Cause**: The expression references a field, node, or variable that doesn't exist in the data flow.

**Debugging Steps**:
1. Check the output of previous nodes to verify available fields
2. Use the Expression Editor to test expressions interactively
3. Add a Set node before this one to inspect available data
4. Use optional chaining for potentially undefined fields: `$json.field?.subfield`

**Best Practice**: Always validate data availability before using expressions.

Fix the expression in 'Window Buffer Memory' parameter 'sessionKey'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Empty Input Handling

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "8e95de061dd3893a50b8b4c150c8084a7848fb1df63f53533941b7c91a8ab996"
  },
  "nodes": [
    {
      "id": "6325369f-5881-4e4e-b71b-510a64b236ef",
      "name": "Retrieve relevant info",
      "type": "n8n-nodes-base.set",
      "position": [
        1260,
        400
      ],
      "parameters": {
        "mode": "raw",
        "options": {},
        "jsonOutput": "={\n\"track\" : \"{{ $json.track.name.replaceAll('\"',\"'\") }}\",\n\"artist\": \"{{ $json.track.artists[0].name }}\",\n\"album\" :\"{{ $json.track.album.name }}\",\n\"track_spotify_uri\" : \"{{ $json.track.uri }}\",\n\"track_spotify_id\" : \"{{ $json.track.id }}\",\n\"external_urls\": \"{{ $json.track.external_urls.spotify }}\",\n\"track_popularity\" : \"{{ $json.track.popularity }}\",\n\"album_release_date\" : \"{{ $json.track.album.release_date.toDateTime().year }}\"\n}"
      },
      "typeVersion": 3.4
    },
    {
      "id": "2252fe16-6ee7-4fbe-b74e-d9bdcc7ad708",
      "name": "Batch preparation",
      "type": "n8n-nodes-base.code",
      "position": [
        1560,
        280
      ],
      "parameters": {
        "jsCode": "const items = $input.all();\nconst trackSpotifyIds = items.map((item) => item?.json?.track_spotify_id);\n\nconst aggregatedItems = [];\nfor (let i = 0; i < trackSpotifyIds.length; i += 100) {\n aggregatedItems.push({\n json: {\n trackSpotifyIds: trackSpotifyIds.slice(i, i + 100),\n },\n });\n}\n\nreturn aggregatedItems;\n"
      },
      "typeVersion": 2
    },
    {
      "id": "83c181f8-ed18-41d7-8c7e-26b0dd320083",
      "name": "Get Track details",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1980,
        280
      ],
      "parameters": {
        "url": "https://api.spotify.com/v1/audio-features",
        "options": {},
        "sendQuery": true,
        "authentication": "predefinedCredentialType",
        "queryParameters": {
          "parameters": [
            {
              "name": "ids",
              "va...

Output:
This workflow may fail when receiving empty or null input data.

**Common Error Messages**:
- "Cannot read property 'x' of undefined"
- "No items to process"
- "Input data is empty"

**Root Cause**: The workflow doesn't handle cases where:
- Trigger receives no data
- Previous node returns empty array
- API returns null or empty response

**Solutions**:

1. **Add IF Node for Empty Check**:
```json
{
  "parameters": {
    "conditions": {
      "number": [{
        "value1": "={{ $json.length }}",
        "operation": "larger",
        "value2": 0
      }]
    }
  },
  "name": "Check Not Empty",
  "type": "n8n-nodes-base.if"
}
```

2. **Use Default Values**:
```javascript
{{ $json.field ?? "default_value" }}
{{ $json.items || [] }}
```

3. **Add Set Node with Defaults**:
- Create a Set node that provides default values
- Place it early in the workflow

4. **Implement No Match Output**:
- Many nodes have "No Match" outputs
- Use these to handle empty cases gracefully

**Best Practice**: Always validate input data and provide sensible defaults for optional fields.

Add validation for empty or null input data.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Expression Reference Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "f9X48gqgIUwyseMM",
  "meta": {
    "instanceId": "d47f3738b860eed937a1b18d7345fa2c65cf4b4957554e29477cb064a7039870"
  },
  "name": "Obsidian Notes Read Aloud: Available as a Podcast Feed",
  "tags": [],
  "nodes": [
    {
      "id": "a44b5cb3-6c9f-4227-a45f-a21765ea120c",
      "name": "OpenAI1",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        -660,
        -180
      ],
      "parameters": {
        "input": "={{ $json.body.content }}",
        "options": {
          "response_format": "mp3"
        },
        "resource": "audio"
      },
      "credentials": {
        "openAiApi": {
          "id": "q8L9oWVM7QyzYEE5",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.7
    },
    {
      "id": "9ca589b6-f1c7-44a9-8ff7-4abb979a71c3",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1200,
        -400
      ],
      "parameters": {
        "width": 440,
        "height": 540,
        "content": "## Send Notes to Webhook\n**Setup:**\n- Install [Post Webhook Plugin](https://github.com/Masterb1234/obsidian-post-webhook/) in Obsidian\n- Enter n8n Webhook URL and name in plugin settings\n\n**Usage:**\n- Select text or use full note\n- Open Command Palette (Ctrl+P)\n- Choose 'Send Note/Selection to [name]'\n- Audio file appears in Podcast Feed and note"
      },
      "typeVersion": 1
    },
    {
      "id": "3ea132e5-8c67-4140-a9b2-607ea256e90f",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1200,
        240
      ],
      "parameters": {
        "width": 440,
        "height": 440,
        "content": "## Generic Podcast Feed Module\nA reusable module for any 'X-to-Podcast' workflow. Generates standard RSS feed from:\n- Source data (Google Sheets)\n- Podcast metadata\n\nCompatible with all major podcast platforms (Apple, Google, Spotify, etc.).\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n"
      },
      "typ...

Output:
In node 'Return Podcast Feed to Webhook', the parameter 'respondWith' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `text`

**Root Cause**: The expression references a field, node, or variable that doesn't exist in the data flow.

**Debugging Steps**:
1. Check the output of previous nodes to verify available fields
2. Use the Expression Editor to test expressions interactively
3. Add a Set node before this one to inspect available data
4. Use optional chaining for potentially undefined fields: `$json.field?.subfield`

**Best Practice**: Always validate data availability before using expressions.

Fix the expression in 'Return Podcast Feed to Webhook' parameter 'respondWith'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Data Type Mismatch

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "1V1gcK6vyczRqdZC",
  "meta": {
    "instanceId": "d868e3d040e7bda892c81b17cf446053ea25d2556fcef89cbe19dd61a3e876e9",
    "templateCredsSetupCompleted": true
  },
  "name": "Printify Automation - Update Title and Description - AlexK1919",
  "tags": [
    {
      "id": "NBHymnfw5EIluMXO",
      "name": "Printify",
      "createdAt": "2024-11-27T18:26:34.584Z",
      "updatedAt": "2024-11-27T18:26:34.584Z"
    },
    {
      "id": "QsH2EXuw2e7YCv0K",
      "name": "OpenAI",
      "createdAt": "2024-11-15T04:05:20.872Z",
      "updatedAt": "2024-11-15T04:05:20.872Z"
    }
  ],
  "nodes": [
    {
      "id": "313b16dc-2583-42f3-a0f7-487e75d7a7ec",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -700,
        -100
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "fd59c09f-64cd-4e8a-80b1-d1abd9a52a5c",
      "name": "Printify - Get Shops",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -60,
        -100
      ],
      "parameters": {
        "url": "https://api.printify.com/v1/shops.json",
        "options": {},
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "vBaDp4RbmXnEx2rj",
          "name": "AlexK1919 Printify Header Auth"
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "8fa6a094-02f5-46c4-90d4-c17de302b004",
      "name": "Printify - Get Products",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        140,
        -100
      ],
      "parameters": {
        "url": "=https://api.printify.com/v1/shops/{{ $json.id }}/products.json",
        "options": {},
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "vBaDp4RbmXnEx2rj",
          "name": "...

Output:
The node 'Printify - Get Shops1' has a data type mismatch in its parameters.

**Issue**: A field expected a number but received a string value.

**Common Causes**:
1. Expression returns string instead of number
2. JSON parsing preserves string types for numeric values
3. Upstream node outputs different data types than expected

**Solutions**:

1. **Type Conversion in Expression**:
```javascript
// Convert string to number
{ parseInt($json.stringValue) }
{ parseFloat($json.decimalString) }
{ Number($json.value) }
```

2. **Use Code Node for Transformation**:
```javascript
return items.map(item => {
  item.json.numericField = Number(item.json.stringField);
  return item;
});
```

3. **Validate Data Types**:
- Use IF node to check types before processing
- Add error handling for invalid types

**Best Practice**: Always validate and transform data types explicitly when passing data between nodes.

Fix data type conversion in 'Printify - Get Shops1'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Empty Input Handling

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "0bd9e607aabfd58640f9f5a370e768a7755e93315179f5bcc6d1f8f114b3567a"
  },
  "nodes": [
    {
      "id": "97b36168-7fa8-4a97-a6cc-c42496918c4c",
      "name": "Search Person in CRM",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        -880,
        400
      ],
      "parameters": {
        "term": "={{ $json.from.value[0].address }}",
        "limit": 1,
        "resource": "person",
        "operation": "search",
        "additionalFields": {
          "includeFields": ""
        }
      },
      "credentials": {
        "pipedriveApi": {
          "id": "MdJQDtRDHnpwuVYP",
          "name": "Pipedrive LinkedUp"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "2a17582b-9375-4a01-87d9-a50f573b83db",
      "name": "In campaign?",
      "type": "n8n-nodes-base.if",
      "position": [
        -420,
        400
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{ $json.in_campaign }}",
              "value2": "True"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "2a8d509f-8ac2-4f45-a905-f34552833381",
      "name": "Get person from CRM",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        -640,
        400
      ],
      "parameters": {
        "personId": "={{ $json.id }}",
        "resource": "person",
        "operation": "get",
        "resolveProperties": true
      },
      "credentials": {
        "pipedriveApi": {
          "id": "MdJQDtRDHnpwuVYP",
          "name": "Pipedrive LinkedUp"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "b9c6f3d3-1a6d-4144-8e77-3a3c6e5282d8",
      "name": "Is interested?",
      "type": "n8n-nodes-base.openAi",
      "position": [
        -180,
        380
      ],
      "parameters": {
        "model": "gpt-4",
        "prompt": {
          "messages": [
            {
              "content": "=You are the best sa...

Output:
This workflow may fail when receiving empty or null input data.

**Common Error Messages**:
- "Cannot read property 'x' of undefined"
- "No items to process"
- "Input data is empty"

**Root Cause**: The workflow doesn't handle cases where:
- Trigger receives no data
- Previous node returns empty array
- API returns null or empty response

**Solutions**:

1. **Add IF Node for Empty Check**:
```json
{
  "parameters": {
    "conditions": {
      "number": [{
        "value1": "={{ $json.length }}",
        "operation": "larger",
        "value2": 0
      }]
    }
  },
  "name": "Check Not Empty",
  "type": "n8n-nodes-base.if"
}
```

2. **Use Default Values**:
```javascript
{{ $json.field ?? "default_value" }}
{{ $json.items || [] }}
```

3. **Add Set Node with Defaults**:
- Create a Set node that provides default values
- Place it early in the workflow

4. **Implement No Match Output**:
- Many nodes have "No Match" outputs
- Use these to handle empty cases gracefully

**Best Practice**: Always validate input data and provide sensible defaults for optional fields.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Disconnected Node

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "205b3bc06c96f2dc835b4f00e1cbf9a937a74eeb3b47c99d0c30b0586dbf85aa",
    "templateId": "2436"
  },
  "nodes": [
    {
      "id": "b24c6e28-3c9e-4069-9e87-49b2efd47257",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1200,
        660
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "AzPPV759YPBxJj3o",
          "name": "Max's DevRel OpenAI account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "c71a3e22-f0fd-4377-9be2-32438b282430",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        200,
        240
      ],
      "parameters": {
        "color": 7,
        "width": 636.2128494576581,
        "height": 494.9629292914819,
        "content": "![Siri Template Thumbnail](https://uploads.n8n.io/devrel/wf-siri-header.png#full-width)\n## \"Hey Siri, Ask Agent\" workflow\n**Made by [Max Tkacz](https://www.linkedin.com/in/maxtkacz) during the [30 Day AI Sprint](https://30dayaisprint.notion.site/)**\n\nThis template integrates with Apple Shortcuts to trigger an n8n AI Agent via a \"Hey Siri\" command. The shortcut prompts for spoken input, transcribes it, and sends it to the workflow's `When Called by Apple Shortcut` Webhook trigger. The AI Agent processes the input and Siri dictates the response back to you.\n\nThe workflow also passes the current date and time to the `AI Agent`, which you can extend with additional context, like data from an App node, for more customized responses.\n\n"
      },
      "typeVersion": 1
    },
    {
      "id": "a4ec93c3-eefa-4006-b02c-f995fb7bc410",
      "name": "Respond to Apple Shortcut",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1640,
        460
      ],
      "parameters": {
        "options": {},
        "respondWith": "text"...

Output:
The workflow has a broken data flow. The node 'AI Agent' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'AI Agent'.

**Impact**: Data from 'AI Agent' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from 'AI Agent' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "AI Agent": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Rate Limiting Risk

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "f4f5d195bb2162a0972f737368404b18be694648d365d6c6771d7b4909d28167"
  },
  "nodes": [
    {
      "id": "b165115d-5505-4e03-bf41-c21320cb8b09",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        80,
        40
      ],
      "parameters": {
        "color": 7,
        "width": 681.8337349708484,
        "height": 843.1482165886073,
        "content": "## Workflow: Text automations using Apple Shortcuts\n\n**Overview**\n- This workflow answers user requests sent via Apple Shortcuts\n- Several Shortcuts call the same webhook, with a query and a type of query\n- Types of query are:\n - translate to english\n - translate to spanish\n - correct grammar (without changing the actual content)\n - make content shorter\n - make content longer\n\n\n**How it works**\n- Select a text you are writing\n- Launch the shortcut\n- The text is sent to the webhook\n- Depending on the type of request, a different prompt is used\n- Each request is sent to an OpenAI node\n- The workflow responds to the request with the response from GPT\n- Shortcut replace the selected text with the new one\n\n**How to use it**\n- Activate the workflow\n- Download [this Shortcut template](https://drive.usercontent.google.com/u/0/uc?id=16zs5iJX7KeX_4e0SoV49_KfbU7-EF0NE&export=download)\n- Install the shortcut\n- In step 2 of the shortcut, change the url of the Webhook\n- In Shortcut details, \"add Keyboard Shortcut\" with the key you want to use to launch the shortcut\n- Go to settings, advanced, check \"Allow running scripts\"\n- You are ready to use the shortcut. Select a text and hit the keyboard shortcut you just defined\n\n\n**Notes**\n- If you use rich formatting, you'll have to test multiple ways to replace characters in the output. For example, you might use `{{ $json.message.content.output.replaceAll('\\n', \"<br/>\") }}` in the \"Respond to Shortcut\" node depending on the app you use most.\n- This is a basic example ...

Output:
This workflow may encounter rate limiting issues when processing large batches of data.

**Common Rate Limit Errors**:
- HTTP 429 Too Many Requests
- HTTP 503 Service Unavailable
- API-specific rate limit messages

**Root Cause**: The workflow makes too many API requests in a short time period without delays.

**Solutions**:

1. **Add Wait Nodes**: Insert a Wait node between API calls
```json
{
  "parameters": {"amount": 1, "unit": "seconds"},
  "name": "Rate Limit Delay",
  "type": "n8n-nodes-base.wait"
}
```

2. **Enable Retry on Fail**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
```

3. **Use Batch Processing**: Split items into smaller batches with delays

4. **Implement Exponential Backoff**: Increase wait times with each retry

**Best Practice**: Always check API documentation for rate limits and implement appropriate throttling.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Missing Credentials

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "7DPLpEkww5Uctcml",
  "meta": {
    "instanceId": "75d76ac1fb686d403c2294ca007b62282f34c3e15dc3528cc1dbe36a827c0c6e"
  },
  "name": "get_a_web_page",
  "tags": [
    {
      "id": "7v5QbLiQYkQ7zGTK",
      "name": "tools",
      "createdAt": "2025-01-08T16:33:21.887Z",
      "updatedAt": "2025-01-08T16:33:21.887Z"
    }
  ],
  "nodes": [
    {
      "id": "290cc9b8-e4b1-4124-ab0e-afbb02a9072b",
      "name": "Execute Workflow Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        -460,
        -100
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "f256ed59-ba61-4912-9a75-4e7703547de5",
      "name": "FireCrawl",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -220,
        -100
      ],
      "parameters": {
        "url": "https://api.firecrawl.dev/v1/scrape",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n \"url\": \"{{ $json.query.url }}\",\n \"formats\": [\n \"markdown\"\n ]\n} ",
        "sendBody": true,
        "sendHeaders": true,
        "specifyBody": "json",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "headerParameters": {
          "parameters": [
            {}
          ]
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "a28bdbe6-fa59-4bf1-b0ab-c34ebb10cf0f",
      "name": "Edit Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        -20,
        -100
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "1af62ef9-7385-411a-8aba-e4087f09c3a9",
              "name": "response",
              "type": "string",
              "value": "={{ $json.data.markdown }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "fcd26213-038a-453f-80e5-a3936e4c2d06",
      "name": "Sticky Note",
      "type": "n8n-nodes...

Output:
The node 'FireCrawl' (type: n8n-nodes-base.httpRequest) requires credentials but the 'credentials' configuration is missing.

**Root Cause**: The credentials object was not defined for this node.

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "httpHeaderAuth": {
    "id": "RoJ6k6pWBzSVp9JK",
    "name": "Firecrawl"
  }
}
```

**Best Practice**: Always verify credentials are properly configured before deploying workflows. Use n8n's credential management system to store sensitive data securely.

Add credentials configuration to the 'FireCrawl' node.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Missing Credentials

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "SJrqDqTBIAyaZQkq",
  "meta": {
    "instanceId": "73d9d5380db181d01f4e26492c771d4cb5c4d6d109f18e2621cf49cac4c50763",
    "templateCredsSetupCompleted": true
  },
  "name": "UTM Link Creator & QR Code Generator with Scheduled Google Analytics Reports",
  "tags": [],
  "nodes": [
    {
      "id": "5efbd956-51b6-4f94-aebc-07e3e691f7eb",
      "name": "OpenAI Chat Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        -180,
        480
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "95QGJD3XSz0piaNU",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "a1acd323-ed07-41b4-a51e-614afe361893",
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        0,
        480
      ],
      "parameters": {
        "sessionKey": "={{ $json.timestamp }}",
        "sessionIdType": "customKey",
        "contextWindowLength": 200
      },
      "typeVersion": 1.3
    },
    {
      "id": "c3c2b5fa-c294-4306-a050-dccd592477fa",
      "name": "Google Analytics",
      "type": "n8n-nodes-base.googleAnalyticsTool",
      "position": [
        160,
        480
      ],
      "parameters": {
        "metricsGA4": {
          "metricValues": [
            {
              "listName": "sessions"
            }
          ]
        },
        "propertyId": {
          "__rl": true,
          "mode": "list",
          "value": "404306108",
          "cachedResultUrl": "https://analytics.google.com/analytics/web/#/p404306108/",
          "cachedResultName": "East Coast Concrete Coating"
        },
        "dimensionsGA4": {
          "dimensionValues": [
            {},
            {
              "listName": "sourceMedium"
            }
          ...

Output:
The node 'Submit UTM Link To Database' (type: n8n-nodes-base.airtable) requires credentials but the 'credentials' configuration is missing.

**Root Cause**: The credentials object was not defined for this node.

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "airtableTokenApi": {
    "id": "0ApVmNsLu7aFzQD6",
    "name": "Airtable Personal Access Token account"
  }
}
```

**Best Practice**: Always verify credentials are properly configured before deploying workflows. Use n8n's credential management system to store sensitive data securely.

Add credentials configuration to the 'Submit UTM Link To Database' node.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Missing Credentials

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "f4f5d195bb2162a0972f737368404b18be694648d365d6c6771d7b4909d28167",
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "50695e7f-3334-4124-a46e-1b3819412e26",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1260,
        560
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {
          "temperature": 0.1
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "WqzqjezKh8VtxdqA",
          "name": "OpenAi account - Baptiste"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "2f07481d-3ca4-48ab-a8ff-59e9ab5c6062",
      "name": "Execute Workflow",
      "type": "n8n-nodes-base.executeWorkflow",
      "position": [
        2360,
        280
      ],
      "parameters": {
        "options": {
          "waitForSubWorkflow": true
        },
        "workflowId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $workflow.id }}"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "49120164-4ffc-4fe0-8ee3-4ae13bda6c8d",
      "name": "Execute \"Generate a chart\" tool",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        1320,
        1140
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "0fc6eaf9-8521-44ec-987e-73644d0cba79",
      "name": "OpenAI - Generate Chart definition with Structured Output",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1620,
        1140
      ],
      "parameters": {
        "url": "https://api.openai.com/v1/chat/completions",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n \"model\": \"gpt-4o-2024-08-06\",\n \"messages\": [\n {\n \"role\": \"system\",\n \"content\": \"Based on the user request, generate a valid Chart.js definition. Important: - Be careful with the data scale and beginatzero that al...

Output:
The node 'OpenAI Chat Model Classifier' (type: @n8n/n8n-nodes-langchain.lmChatOpenAi) requires credentials but the 'credentials' configuration is missing.

**Root Cause**: The credentials object was not defined for this node.

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "openAiApi": {
    "id": "WqzqjezKh8VtxdqA",
    "name": "OpenAi account - Baptiste"
  }
}
```

**Best Practice**: Always verify credentials are properly configured before deploying workflows. Use n8n's credential management system to store sensitive data securely.

Add credentials configuration to the 'OpenAI Chat Model Classifier' node.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Rate Limiting Risk

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "jhNsy4dPQYw9QDaa",
  "meta": {
    "instanceId": "1acdaec6c8e84424b4715cf41a9f7ec057947452db21cd2e22afbc454c8711cd",
    "templateId": "2683",
    "templateCredsSetupCompleted": true
  },
  "name": "Zoom AI Meeting Assistant",
  "tags": [],
  "nodes": [
    {
      "id": "9b4b21aa-c746-4b94-a4dd-12736a7d4098",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        2160,
        1040
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "EjchNb5GBqYh0Cqn",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "536e360c-d668-4f58-8670-4e78ef579dbe",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        160,
        460
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "eb2b6b98-ca3c-46a9-9d5f-9b5297441224",
      "name": "No Recording/Transcript available",
      "type": "n8n-nodes-base.stopAndError",
      "position": [
        880,
        660
      ],
      "parameters": {
        "errorMessage": "={{ $json.error.cause.message }}"
      },
      "typeVersion": 1
    },
    {
      "id": "33ee5d8b-a373-44a8-9777-9386cf8cf008",
      "name": "Zoom: Get data of last meeting",
      "type": "n8n-nodes-base.zoom",
      "position": [
        340,
        460
      ],
      "parameters": {
        "filters": {
          "type": "scheduled"
        },
        "operation": "getAll",
        "returnAll": true,
        "authentication": "oAuth2"
      },
      "credentials": {
        "zoomOAuth2Api": {
          "id": "MmccxSST1g202tG2",
          "name": "Zoom account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "d67d1fcb-78d1-47e5-bc0e-5735f0f48350",
      "name": "Filter transcript URL",
      "type": "n8n-nodes-base.set",
    ...

Output:
This workflow may encounter rate limiting issues when processing large batches of data.

**Common Rate Limit Errors**:
- HTTP 429 Too Many Requests
- HTTP 503 Service Unavailable
- API-specific rate limit messages

**Root Cause**: The workflow makes too many API requests in a short time period without delays.

**Solutions**:

1. **Add Wait Nodes**: Insert a Wait node between API calls
```json
{
  "parameters": {"amount": 1, "unit": "seconds"},
  "name": "Rate Limit Delay",
  "type": "n8n-nodes-base.wait"
}
```

2. **Enable Retry on Fail**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
```

3. **Use Batch Processing**: Split items into smaller batches with delays

4. **Implement Exponential Backoff**: Increase wait times with each retry

**Best Practice**: Always check API documentation for rate limits and implement appropriate throttling.

Add rate limiting protection with Wait nodes and retry logic.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Timeout Configuration

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "62b3b6db4f4d3641a1fa1da6dfb9699a19380a1f60cbc18fc75d6d145f35552b"
  },
  "nodes": [
    {
      "id": "40bb5497-d1d2-4eb7-b683-78b88c8d9230",
      "name": "Google Drive",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        496.83478320435574,
        520
      ],
      "parameters": {
        "fileId": {
          "__rl": true,
          "mode": "url",
          "value": "https://drive.google.com/file/d/11Koq9q53nkk0F5Y8eZgaWJUVR03I4-MM/view"
        },
        "options": {},
        "operation": "download"
      },
      "credentials": {
        "googleDriveOAuth2Api": {
          "id": "20",
          "name": "Google Drive account"
        }
      },
      "typeVersion": 3
    },
    {
      "id": "1323d520-1528-4a5a-9806-8f4f45306098",
      "name": "Recursive Character Text Splitter",
      "type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
      "position": [
        996.8347832043557,
        920
      ],
      "parameters": {
        "chunkSize": 3000,
        "chunkOverlap": 200
      },
      "typeVersion": 1
    },
    {
      "id": "796b155a-64e6-4a52-9168-a37c68077d99",
      "name": "Embeddings OpenAI",
      "type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
      "position": [
        836.8347832043557,
        740
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "JCgD7807AQpe8Xge",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "dbe42c28-6f0b-4999-8372-0b42f6fb5916",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        260,
        420
      ],
      "parameters": {
        "color": 7,
        "width": 978.0454109366399,
        "height": 806.6556079800943,
        "content": "### Load data into database\nFetch file from Google Drive, split it into chunks and insert into Pinecone index"
      }...

Output:
This workflow may experience timeout issues with long-running API requests.

**Symptoms**:
- Execution hangs indefinitely
- Connection timeout errors
- ETIMEDOUT or ESOCKETTIMEDOUT errors

**Root Cause**: No timeout configured for HTTP requests, or external services are slow.

**Solutions**:

1. **Set Appropriate Timeouts**:
```json
"options": {
  "timeout": 30000  // 30 seconds
}
```

2. **Add Error Handling**:
- Use Error Trigger node to catch timeout errors
- Implement fallback logic for failed requests

3. **Use Async Patterns**:
- For long operations, use webhook callbacks
- Implement polling patterns instead of waiting

4. **Configure Node Settings**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 2000,
"continueOnFail": true
```

**Best Practice**: Set reasonable timeouts (10-30 seconds) and always have error handling for external API calls.

Configure appropriate timeouts and error handling for HTTP requests.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Empty Input Handling

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "26ba763460b97c249b82942b23b6384876dfeb9327513332e743c5f6219c2b8e"
  },
  "nodes": [
    {
      "id": "a3af309b-d24c-42fe-8bcd-f330927c7a3c",
      "name": "Local File Trigger",
      "type": "n8n-nodes-base.localFileTrigger",
      "position": [
        140,
        260
      ],
      "parameters": {
        "path": "/home/node/storynotes/context",
        "events": [
          "add"
        ],
        "options": {
          "usePolling": true,
          "followSymlinks": true
        },
        "triggerOn": "folder"
      },
      "typeVersion": 1
    },
    {
      "id": "048f9d67-6519-4dea-97df-aaddfefbfea2",
      "name": "Default Data Loader",
      "type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
      "position": [
        1300,
        720
      ],
      "parameters": {
        "options": {
          "metadata": {
            "metadataValues": [
              {
                "name": "project",
                "value": "={{ $('Settings').item.json.project }}"
              },
              {
                "name": "filename",
                "value": "={{ $('Settings').item.json.filename }}"
              }
            ]
          }
        },
        "jsonData": "={{ $json.data }}",
        "jsonMode": "expressionData"
      },
      "typeVersion": 1
    },
    {
      "id": "9e9047c9-4428-4afb-8c74-d6eb1075a65a",
      "name": "Recursive Character Text Splitter",
      "type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
      "position": [
        1300,
        860
      ],
      "parameters": {
        "options": {},
        "chunkSize": 2000
      },
      "typeVersion": 1
    },
    {
      "id": "e42e3f82-6cd9-40c4-9da2-8f87ee5b3956",
      "name": "Embeddings Mistral Cloud",
      "type": "@n8n/n8n-nodes-langchain.embeddingsMistralCloud",
      "position": [
        1180,
        720
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "...

Output:
This workflow may fail when receiving empty or null input data.

**Common Error Messages**:
- "Cannot read property 'x' of undefined"
- "No items to process"
- "Input data is empty"

**Root Cause**: The workflow doesn't handle cases where:
- Trigger receives no data
- Previous node returns empty array
- API returns null or empty response

**Solutions**:

1. **Add IF Node for Empty Check**:
```json
{
  "parameters": {
    "conditions": {
      "number": [{
        "value1": "={{ $json.length }}",
        "operation": "larger",
        "value2": 0
      }]
    }
  },
  "name": "Check Not Empty",
  "type": "n8n-nodes-base.if"
}
```

2. **Use Default Values**:
```javascript
{{ $json.field ?? "default_value" }}
{{ $json.items || [] }}
```

3. **Add Set Node with Defaults**:
- Create a Set node that provides default values
- Place it early in the workflow

4. **Implement No Match Output**:
- Many nodes have "No Match" outputs
- Use these to handle empty cases gracefully

**Best Practice**: Always validate input data and provide sensible defaults for optional fields.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Rate Limiting Risk

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "cb484ba7b742928a2048bf8829668bed5b5ad9787579adea888f05980292a4a7",
    "templateId": "1960"
  },
  "nodes": [
    {
      "id": "296a935f-bd02-44bc-9e1e-3e4d6a307e38",
      "name": "When clicking \"Execute Workflow\"",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        260,
        240
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "61a38c00-f196-4b01-9274-c5e0f4c511bc",
      "name": "Embeddings OpenAI",
      "type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
      "position": [
        1060,
        460
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "VQtv7frm7eLiEDnd",
          "name": "OpenAi account 7"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "816066bd-02e8-4de2-bcee-ab81d890435a",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        426.9261940355327,
        60.389291053299075
      ],
      "parameters": {
        "color": 7,
        "width": 1086.039382705461,
        "height": 728.4168721167887,
        "content": "## 1. Setup: Fetch file from Google Drive, split it into chunks and insert into a vector database\nNote that running this part multiple times will insert multiple copies into your DB"
      },
      "typeVersion": 1
    },
    {
      "id": "30cd81ad-d658-4c33-9a38-68e33b74cdae",
      "name": "Default Data Loader",
      "type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
      "position": [
        1240,
        460
      ],
      "parameters": {
        "options": {
          "metadata": {
            "metadataValues": [
              {
                "name": "file_url",
                "value": "={{ $json.file_url }}"
              },
              {
                "name": "file_name",
                "value": "={{ $('Add in metadata').item.json.file_name }}"
              }
            ]
 ...

Output:
This workflow may encounter rate limiting issues when processing large batches of data.

**Common Rate Limit Errors**:
- HTTP 429 Too Many Requests
- HTTP 503 Service Unavailable
- API-specific rate limit messages

**Root Cause**: The workflow makes too many API requests in a short time period without delays.

**Solutions**:

1. **Add Wait Nodes**: Insert a Wait node between API calls
```json
{
  "parameters": {"amount": 1, "unit": "seconds"},
  "name": "Rate Limit Delay",
  "type": "n8n-nodes-base.wait"
}
```

2. **Enable Retry on Fail**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 5000
```

3. **Use Batch Processing**: Split items into smaller batches with delays

4. **Implement Exponential Backoff**: Increase wait times with each retry

**Best Practice**: Always check API documentation for rate limits and implement appropriate throttling.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Expression Reference Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9"
  },
  "nodes": [
    {
      "id": "38da57b7-2161-415d-8473-783ccdc7b975",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -260,
        840
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "2cd46d91-105d-4b5e-be43-3343a9da815d",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -780,
        540
      ],
      "parameters": {
        "width": 365.05232558139534,
        "height": 401.24529475392126,
        "content": "## Try me out!\n\n### This workflow converts a Candidate Resume PDF to an image which is then \"read\" by a Vision Language Model (VLM). The VLM assesses if the candidate's CV is a fit for the desired role.\n\nThis approach can be employed to combat \"hidden prompts\" planted in resumes to bypass and/or manipulate automated ATS systems using AI.\n\n\n### Need Help?\nJoin the [Discord](https://discord.com/invite/XPKeKXeB7d) or ask in the [Forum](https://community.n8n.io/)!\n"
      },
      "typeVersion": 1
    },
    {
      "id": "40bab53a-fcbc-4acc-8d59-c20b3e1b2697",
      "name": "Structured Output Parser",
      "type": "@n8n/n8n-nodes-langchain.outputParserStructured",
      "position": [
        1200,
        980
      ],
      "parameters": {
        "jsonSchemaExample": "{\n\t\"is_qualified\": true,\n\t\"reason\": \"\"\n}"
      },
      "typeVersion": 1.2
    },
    {
      "id": "d75fb7ab-cfbc-419d-b803-deb9e99114ba",
      "name": "Should Proceed To Stage 2?",
      "type": "n8n-nodes-base.if",
      "position": [
        1360,
        820
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "a...

Output:
In node 'Sticky Note4', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $env.UNDEFINED_ENV_VAR }}`
**Original Value**: `

### Data Privacy Warning!
For demo purposes, we're using the public online version of Stirling PDF. It is recommended to setup your own private instance of Stirling PDF before using this workflow in production.`

**Root Cause**: The expression references a field, node, or variable that doesn't exist in the data flow.

**Debugging Steps**:
1. Check the output of previous nodes to verify available fields
2. Use the Expression Editor to test expressions interactively
3. Add a Set node before this one to inspect available data
4. Use optional chaining for potentially undefined fields: `$json.field?.subfield`

**Best Practice**: Always validate data availability before using expressions.

Fix the expression in 'Sticky Note4' parameter 'content'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Syntax Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "f4f5d195bb2162a0972f737368404b18be694648d365d6c6771d7b4909d28167"
  }
  "nodes": [
    {
      "id": "b6cd232e-e82e-457b-9f03-c010b3eba148",
      "name": "When clicking 'Test workflow'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -40,
        0
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "2b734806-e3c0-4552-a491-54ca846ed3ac",
      "name": "Extract from File",
      "type": "n8n-nodes-base.extractFromFile",
      "position": [
        620,
        0
      ],
      "parameters": {
        "options": {},
        "operation": "binaryToPropery"
      },
      "typeVersion": 1
    },
    {
      "id": "2c199499-cc4f-405c-8560-765500b7acba",
      "name": "Google Drive",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        420,
        0
      ],
      "parameters": {
        "fileId": {
          "__rl": true,
          "mode": "list",
          "value": "18Ac2xorxirIBm9FNFDDB5aVUSPBCCg1U",
          "cachedResultUrl": "https://drive.google.com/file/d/18Ac2xorxirIBm9FNFDDB5aVUSPBCCg1U/view?usp=drivesdk",
          "cachedResultName": "Invoice-798FE2FA-0004.pdf"
        },
        "options": {},
        "operation": "download"
      },
      "credentials": {
        "googleDriveOAuth2Api": {
          "id": "AUEpxwlqBJghNMtb",
          "name": "Google Drive account"
        }
      },
      "typeVersion": 3
    },
    {
      "id": "e3031c0c-f059-4f30-9684-10014a277d55",
      "name": "Call Gemini 2.0 Flash with PDF Capabilities",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        880,
        220
      ],
      "parameters": {
        "url": "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash-exp:generateContent",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n \"contents\": [\n {\n \"parts\": [\n {\n \"inline_data\": {\n \"mime_type\": \"application/pdf\",\n \"data\": \"{{ $json.d...

Output: The JSON is invalid because a comma is missing between properties. JSON requires commas to separate object properties and array elements.

Add the missing comma between object properties.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Timeout Configuration

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "nodes": [
    {
      "id": "79849bb5-00a4-42e6-92c4-b06c7a20eb3e",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1580,
        340
      ],
      "parameters": {
        "model": "gpt-4-turbo-preview",
        "options": {
          "temperature": 0,
          "responseFormat": "json_object"
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "jazew1WAaSRrjcHp",
          "name": "OpenAI (workfloows@gmail.com)"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "85df0106-1f78-4412-8751-b84d417c8bf9",
      "name": "Convert education to HTML",
      "type": "n8n-nodes-base.code",
      "position": [
        2420,
        180
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "function convertToHTML(list) {\n let html = '';\n\n list.forEach((education, index) => {\n if (index > 0) {\n html += '

'; // Add a new line if it's not the first item\n }\n html += `<b>Institution:</b> ${education.institution}<br />\n<b>Start year:</b> ${education.start_year}<br />\n<b>Degree:</b> ${education.degree}`;\n });\n\n return html;\n}\n\n// Assuming payload is already defined\nconst payload = $input.item.json.education;\n\nconst htmlOutput = convertToHTML(payload);\nreturn {\n htmlOutput\n};"
      },
      "typeVersion": 2
    },
    {
      "id": "da4fc45d-712f-4171-b72a-66b74b4d8e05",
      "name": "Auto-fixing Output Parser",
      "type": "@n8n/n8n-nodes-langchain.outputParserAutofixing",
      "position": [
        1820,
        340
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "225a7513-6fd4-4672-9b40-b10b00f121a7",
      "name": "OpenAI Chat Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1740,
        520
      ],
      "parameters": {
        "options": {
          "temperature": 0
        }
      },
      "credentials": {
       ...

Output:
This workflow may experience timeout issues with long-running API requests.

**Symptoms**:
- Execution hangs indefinitely
- Connection timeout errors
- ETIMEDOUT or ESOCKETTIMEDOUT errors

**Root Cause**: No timeout configured for HTTP requests, or external services are slow.

**Solutions**:

1. **Set Appropriate Timeouts**:
```json
"options": {
  "timeout": 30000  // 30 seconds
}
```

2. **Add Error Handling**:
- Use Error Trigger node to catch timeout errors
- Implement fallback logic for failed requests

3. **Use Async Patterns**:
- For long operations, use webhook callbacks
- Implement polling patterns instead of waiting

4. **Configure Node Settings**:
```json
"retryOnFail": true,
"maxTries": 3,
"waitBetweenTries": 2000,
"continueOnFail": true
```

**Best Practice**: Set reasonable timeouts (10-30 seconds) and always have error handling for external API calls.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Syntax Error

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "B37wvB0tdKgjuabw",
  "meta": {
    "instanceId": "98bf0d6aef1dd8b7a752798121440fb171bf7686b95727fd617f43452393daa3",
    "templateCredsSetupCompleted": true
  },
  "name": "Image to license plate number",
  "tags": [],
  "nodes": [
    {
      "id": "a656334a-0135-4d93-a6df-ca97222c9753",
      "name": "Basic LLM Chain",
      "type": "@n8n/n8n-nodes-langchain.chainLlm",
      "position": [
        -140,
        -380
      ],
      "parameters": {
        "text": "={{ $json.prompt }}",
        "messages": {
          "messageValues": [
            {
              "type": "HumanMessagePromptTemplate",
              "messageType": "imageBinary",
              "binaryImageDataKey": "Image"
            }
          ]
        },
        "promptType": "define"
      },
      "typeVersion": 1.5
    },
    {
      "id": "41a90592-2a91-40ff-abf4-3a795733d521",
      "name": "FormResultPage",
      "type": "n8n-nodes-base.form",
      "position": [
        220,
        -380
      ],
      "webhookId": "218822fe-5eb9-4451-ae8a-14b8f484fdde",
      "parameters": {
        "options": {
          "formTitle": ""
        },
        "operation": "completion",
        "completionTitle": "Extracted information:",
        "completionMessage": "={{ $json.text }}"
      },
      "typeVersion": 1
    },
    {
      "id": "c23b95d9-b7a2-4e9e-a019-5724a9662abd",
      "name": "OpenRouter LLM",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenRouter",
      "position": [
        -60,
        -180
      ],
      "parameters": {
        "model": "={{ $json.model }}",
        "options": {}
      },
      "credentials": {
        "openRouterApi": {
          "id": "bs7tPtvgDTJNGAFJ",
          "name": "OpenRouter account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "8298cd51-8c47-4bc4-af78-2c216207ef76",
      "name": "Settings",
      "type": "n8n-nodes-base.set",
      "position": [
        -340,
        -380
      ],
      "parameters": {
        "options": ...

Output: The JSON is invalid because there is a trailing comma before a closing brace. Remove the extra comma.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Data Type Mismatch

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "id": "sUIPemKdKqmUQFt6",
  "meta": {
    "instanceId": "558d88703fb65b2d0e44613bc35916258b0f0bf983c5d4730c00c424b77ca36a",
    "templateCredsSetupCompleted": true
  },
  "name": "Extract text from PDF and image using Vertex AI (Gemini) into CSV",
  "tags": [],
  "nodes": [
    {
      "id": "f60ef5f9-bc08-4cc9-804e-697ae6f88b9b",
      "name": "Google Gemini Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
      "position": [
        980,
        920
      ],
      "parameters": {
        "options": {},
        "modelName": "models/gemini-1.5-pro-latest"
      },
      "credentials": {
        "googlePalmApi": {
          "id": "hmNTKSKfppgtDbM5",
          "name": "Google Gemini(PaLM) Api account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "81d3f7b8-20cb-4aac-82a9-d4e8e6581105",
      "name": "Get PDF or Images",
      "type": "n8n-nodes-base.googleDriveTrigger",
      "position": [
        220,
        420
      ],
      "parameters": {
        "event": "fileCreated",
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "triggerOn": "specificFolder",
        "folderToWatch": {
          "__rl": true,
          "mode": "list",
          "value": "1HOeRP5iwccg93UPUYmWYD7DyDmRREkhj",
          "cachedResultUrl": "https://drive.google.com/drive/folders/1HOeRP5iwccg93UPUYmWYD7DyDmRREkhj",
          "cachedResultName": "Actual Budget"
        },
        "authentication": "serviceAccount"
      },
      "credentials": {
        "googleApi": {
          "id": "axkK6IN61bEAT6GM",
          "name": "Google Service Account account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "fe9a8228-7950-4e2c-8982-328e03725782",
      "name": "Route based on PDF or Image",
      "type": "n8n-nodes-base.switch",
      "position": [
        480,
        420
      ],
      "parameters": {
        "rules": {
   ...

Output:
The node 'Convert to CSV2' has a data type mismatch in its parameters.

**Issue**: A field expected a number but received a string value.

**Common Causes**:
1. Expression returns string instead of number
2. JSON parsing preserves string types for numeric values
3. Upstream node outputs different data types than expected

**Solutions**:

1. **Type Conversion in Expression**:
```javascript
// Convert string to number
{ parseInt($json.stringValue) }
{ parseFloat($json.decimalString) }
{ Number($json.value) }
```

2. **Use Code Node for Transformation**:
```javascript
return items.map(item => {
  item.json.numericField = Number(item.json.stringField);
  return item;
});
```

3. **Validate Data Types**:
- Use IF node to check types before processing
- Add error handling for invalid types

**Best Practice**: Always validate and transform data types explicitly when passing data between nodes.

Fix data type conversion in 'Convert to CSV2'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: Data Type Mismatch

Please analyze the workflow JSON and explain:
1. What is wrong
2. Why it's causing problems
3. How to fix it

Workflow JSON:
{
  "meta": {
    "instanceId": "26ba763460b97c249b82942b23b6384876dfeb9327513332e743c5f6219c2b8e"
  },
  "nodes": [
    {
      "id": "7076854e-c7e8-45b5-9e5e-16678bffa254",
      "name": "OpenAI Model",
      "type": "@n8n/n8n-nodes-langchain.lmOpenAi",
      "position": [
        2420,
        480
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-3.5-turbo-1106",
          "cachedResultName": "gpt-3.5-turbo-1106"
        },
        "options": {
          "temperature": 0
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "00819f1c-2c60-4b7c-b395-445ec05fd898",
      "name": "Structured Output Parser",
      "type": "@n8n/n8n-nodes-langchain.outputParserStructured",
      "position": [
        2600,
        480
      ],
      "parameters": {
        "jsonSchema": "{\n \"Invoice date\": { \"type\": \"date\" },\n \"invoice number\": { \"type\": \"string\" },\n \"Purchase order number\": { \"type\": \"string\" },\n \"Supplier name\": { \"type\": \"string\" },\n \"Supplier address\": {\n \"type\": \"object\",\n \"properties\": {\n \"address 1\": { \"type\": \"string\" },\n \"address 2\": { \"type\": \"string\" },\n \"city\": { \"type\": \"string\" },\n \"postcode\": { \"type\": \"string\" }\n }\n },\n \"Supplier VAT identification number\": { \"type\": \"string\" },\n \"Customer name\": { \"type\": \"string\" },\n \"Customer address\": {\n \"type\": \"object\",\n \"properties\": {\n \"address 1\": { \"type\": \"string\" },\n \"address 2\": { \"type\": \"string\" },\n \"city\": { \"type\": \"string\" },\n \"postcode\": { \"type\": \"string\" }\n }\n },\n \"Customer VAT identification number\": { \"type\": \"string\" }, \n \"Shipping addresses\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"properties\": {\n \"address 1\": { ...

Output:
The node 'Sticky Note3' has a data type mismatch in its parameters.

**Issue**: A field expected a number but received a string value.

**Common Causes**:
1. Expression returns string instead of number
2. JSON parsing preserves string types for numeric values
3. Upstream node outputs different data types than expected

**Solutions**:

1. **Type Conversion in Expression**:
```javascript
// Convert string to number
{ parseInt($json.stringValue) }
{ parseFloat($json.decimalString) }
{ Number($json.value) }
```

2. **Use Code Node for Transformation**:
```javascript
return items.map(item => {
  item.json.numericField = Number(item.json.stringField);
  return item;
});
```

3. **Validate Data Types**:
- Use IF node to check types before processing
- Add error handling for invalid types

**Best Practice**: Always validate and transform data types explicitly when passing data between nodes.

Fix data type conversion in 'Sticky Note3'.