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:
{
  "id": "167",
  "name": "Smart Factory Data Generator",
  "nodes": [
    {
      "id": "trigger-1971d0eb",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        650,
        300
      ],
      "parameters": {
        "values": {
          "number": [],
          "string": [
            {
              "name": "machine_id.name",
              "value": "n8n_cr8"
            },
            {
              "name": "temperature_celsius",
              "value": "={{Math.floor(Math.random() * 100);}}"
            },
            {
              "name": "machine_id.uptime",
              "value": "={{Math.floor(Math.random() * 100);}}"
            },
            {
              "name": "time_stamp",
              "value": "={{Date.now();}}"
            }
          ],
          "boolean": []
        },
        "options": {}
      },
      "typeVersion": 1,
      "id": "4933a756-e41d-44dc-b327-6cbdb451cdc1",
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "name": "Interval",
      "type": "n8n-nodes-base.interval",
      "position": [
        450,
        300
      ],
      "parameters": {},
      "typeVersion": 1,
      "id": "0af4bac6-6e02-4bdf-944d-a2ae2f9004d0",
      "notes": "This interval node performs automated tasks as part of the workflow."
    },
    {
      "name": "AMQP Sender",
      "type": "n8n-nodes-base.amqp",
      "position": [
        850,
        300
      ],
      "parameters": {
        "sink": "berlin_factory_01",
        "options": {
          "dataAsObject": true
        }
      },
      "credentials": {
        "amqp": ""
      },
      "typeVersion": 1,
      "id": "d23e22ae-7d10-456e-bebe-260ed7ff4305",
      "notes": "This amqp node performs automated tasks as part of the w...

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: 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": "Invoice Ninja Trigger",
      "type": "n8n-nodes-base.invoiceNinjaTrigger",
      "position": [
        890,
        400
      ],
      "webhookId": "97be21b3-ebf5-48cf-b291-5d954657a544",
      "parameters": {
        "event": "create_invoice",
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "invoiceNinjaApi": "invoice_ninja_creds"
      },
      "typeVersion": 1,
      "id": "41a23d9f-11bc-4458-8f99-78f16081296e",
      "notes": "This invoiceNinjaTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-9ca23ec6",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Invoiceninjatrigger Workflow",
  "description": "Automated workflow: Invoiceninjatrigger Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "meta": {
    "instanceId": "workflow-925c6c1c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.240897",
    "updatedAt": "2025-09-29T07:07:47.240923",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "notes": "Excellent quality workflow: Invoiceninjatrigger Workflow. This workflow has been optimized for production use with comprehensive error handling, security...

Output:
The node 'Invoice Ninja Trigger' 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 'Invoice Ninja Trigger'.


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": "Jira Trigger",
      "type": "n8n-nodes-base.jiraTrigger",
      "position": [
        880,
        400
      ],
      "webhookId": "a3ddaf66-7f75-4494-b435-ef88ef1f1917",
      "parameters": {
        "events": [
          "*"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "jiraSoftwareCloudApi": "n8n"
      },
      "typeVersion": 1,
      "id": "e2f82076-1d3e-4ed9-8718-3f772d52d6d8",
      "notes": "This jiraTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-2c1c04cd",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    },
    {
      "parameters": {
        "url": "https://api.example.com/data",
        "method": "GET",
        "options": {}
      },
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        450,
        300
      ]
    }
  ],
  "connections": {},
  "name": "Jiratrigger Workflow",
  "description": "Automated workflow: Jiratrigger Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "meta": {
    "instanceId": "workflow-1cee430c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.275442",
    "updatedAt": "2025-09-29T07:07:47.275463",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready"...

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: 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": "YCQFaJdmJc6Rx4o7",
  "meta": {
    "instanceId": "workflow-41b84066",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.261212",
    "updatedAt": "2025-09-29T07:07:47.261220",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Sync Jira issues with subsequent comments to Notion database",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "3f36dc12-5011-4786-aa21-f20ba72944df",
      "name": "Create database page",
      "type": "n8n-nodes-base.notion",
      "position": [
        460,
        460
      ],
      "parameters": {
        "title": "={{$node[\"On issues created/updated/deleted\"].json[\"issue\"][\"fields\"][\"summary\"]}}",
        "options": {},
        "resource": "databasePage",
        "databaseId": "e3503d88-accb-4ddb-aa45-f962cb03e729",
        "propertiesUi": {
          "propertyValues": [
            {
              "key": "YOUR_CREDENTIAL_HERE",
              "textContent": "={{$node[\"On issues created/updated/deleted\"].json[\"issue\"][\"key\"]}}"
            },
            {
              "key": "YOUR_CREDENTIAL_HERE",
              "numberValue": "={{parseInt($node[\"On issues created/updated/deleted\"].json[\"issue\"][\"id\"])}}"
            },
            {
              "key": "YOUR_CREDENTIAL_HERE",
              "urlValue": "{{ $env.BASE_URL }}",
              "ignoreIfEmpty": true
            },
            {
              "key": "YOUR_CREDENTIAL_HERE",
              "selectValue": "={{$node[\"Lookup table\"].json[\"Status ID\"]}}"
            }
          ]
        }
      },
      "credentials": {
        "notionApi": {
          "id": "XNjSmr171NUO17TK",
          "name": "REPLACE ME"
        }
      },
      "typeVersion": 2,
      "notes": "This notion node performs automated tasks as part of the workflo...

Output:
The node 'If Node' 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.


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": "workflow-33de94bb",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.276799",
    "updatedAt": "2025-09-29T07:07:47.276816",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "645799b0-7ddb-4acb-a95d-3b04eadff445",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1480,
        20
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {},
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "e2923385-2f73-439c-9d5c-5a3c560993cb",
      "name": "OpenAI Chat Model1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        2040,
        420
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "c24728f9-73b9-45f7-9c4e-aee872c59714",
      "name": "OpenAI Chat Model3",
      "type": "n8n-nodes-base.noOp",
      "position": [
        3180,
        -80
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "0...

Output:
The node 'OpenAI Chat Model' 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 'OpenAI Chat Model'.


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": "workflow-db4cf44e",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.293093",
    "updatedAt": "2025-09-29T07:07:47.293113",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "645799b0-7ddb-4acb-a95d-3b04eadff445",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1480,
        20
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "e2923385-2f73-439c-9d5c-5a3c560993cb",
      "name": "OpenAI Chat Model1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        2040,
        420
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "c24728f9-73b9-45f7-9c4e-aee872c59714",
      "name": "OpenAI Chat Model3",
      "type": "n8n-nodes-base.noOp",
      "position": [
        3180,
        -80
      ],
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "8gccIjcuf3gvaoEr",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "0bc19e46-4a65-45fb-9571-d1f00d204c63",
      "name"...

Output:
In node 'Sticky Note6', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `## 6. Notify for Unanswered Questions or Response Waiting
[Read more about the Basic LLM Chain node]({{ $env.WEBHOOK_URL }}

In this step, where signals indicate that the issue is not yet ready to be close, we can try to re-engage issue participants by summarize the conversation so far and sending a reminder comment for any pending actions that were requested. This action can help reduce the number of issues which linger for too long.`

**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 Note6' parameter 'content'.


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": "JotForm Trigger",
      "type": "n8n-nodes-base.jotFormTrigger",
      "position": [
        870,
        400
      ],
      "webhookId": "8ee760f3-f18a-4060-bf41-b583ef4d7bfe",
      "parameters": {
        "form": "202012795501445"
      },
      "credentials": {
        "jotFormApi": "jotform_creds"
      },
      "typeVersion": 1,
      "id": "afce94ae-e040-4987-acab-6cc5d2372bc9",
      "notes": "This jotFormTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-a545b8f6",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    },
    {
      "parameters": {
        "url": "https://api.example.com/data",
        "method": "GET",
        "options": {}
      },
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        450,
        300
      ]
    }
  ],
  "connections": {},
  "name": "Jotformtrigger Workflow",
  "description": "Automated workflow: Jotformtrigger Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "meta": {
    "instanceId": "workflow-2a843d4a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.294164",
    "updatedAt": "2025-09-29T07:07:47.294179",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "opt...

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:
{
  "nodes": [
    {
      "name": "Keap Trigger",
      "type": "n8n-nodes-base.keapTrigger",
      "position": [
        440,
        320
      ],
      "webhookId": "1df33e6f-7e5c-4d70-b90d-d5666aaf63e7",
      "parameters": {
        "eventId": "={{ $env.UNDEFINED_ENV_VAR }}"
      },
      "credentials": {
        "keapOAuth2Api": "keap_creds"
      },
      "typeVersion": 1,
      "id": "43a68f42-6e11-4075-a708-25923c8c0b4e",
      "notes": "This keapTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-2080edf5",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Keaptrigger Workflow",
  "description": "Automated workflow: Keaptrigger Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "meta": {
    "instanceId": "workflow-f8784cf6",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.295599",
    "updatedAt": "2025-09-29T07:07:47.295618",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "notes": "Excellent quality workflow: Keaptrigger Workflow. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."
}...

Output:
In node 'Keap Trigger', the parameter 'eventId' contains an expression that references undefined data.

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

**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 'Keap Trigger' parameter 'eventId'.


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": "workflow-b136cd46",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.308430",
    "updatedAt": "2025-09-29T07:07:47.308449",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "44b2e0ac-1ec9-4acd-bf00-7e280378b8df",
      "name": "Lemlist - Unsubscribe",
      "type": "n8n-nodes-base.lemlist",
      "position": [
        1300,
        -180
      ],
      "parameters": {
        "email": "={{ $json[\"leadEmail\"] }}",
        "resource": "lead",
        "operation": "unsubscribe",
        "campaignId": "={{$json[\"campaignId\"]}}"
      },
      "credentials": {
        "lemlistApi": {
          "id": "{{ $credentials.lemlistApi.id }}",
          "name": "Lemlist - \"lemlist\" team API key"
        }
      },
      "typeVersion": 1,
      "notes": "This lemlist node performs automated tasks as part of the workflow."
    },
    {
      "id": "75dd6db8-5e59-4521-a4be-2272e2914494",
      "name": "follow up task",
      "type": "n8n-nodes-base.hubspot",
      "position": [
        1520,
        640
      ],
      "parameters": {
        "type": "task",
        "metadata": {
          "subject": "=OOO - Follow up with {{ $json[\"properties\"][\"firstname\"][\"value\"] }} {{ $json[\"properties\"][\"lastname\"][\"value\"] }}"
        },
        "resource": "engagement",
        "authentication": "{{ $credentials.oAuth2 }}",
        "additionalFields": {
          "associations": {
            "contactIds": "={{ $json[\"vid\"] }}"
          }
        }
      },
      "credentials": {
        "hubspotOAuth2Api": {
          "id": "{{ $credentials.hubspotOAuth2Api.id }}",
          "name": "Hubspot account"
        }
      },
      "typeVersion": 1,
      "notes": "This hubspot node performs automated tasks as part of the workflow."
    },
    {
      "id": "0ba95d5d-fe73-4687-8e21-02b97b1...

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: 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": "workflow-01939db5",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.315760",
    "updatedAt": "2025-09-29T07:07:47.315814",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "7786165e-5e74-4614-b065-86db19482b72",
      "name": "Format text with Markdown",
      "type": "n8n-nodes-base.markdown",
      "position": [
        -1200,
        980
      ],
      "parameters": {
        "html": "={{ $json.text }}",
        "options": {},
        "destinationKey": "YOUR_CREDENTIAL_HERE"
      },
      "typeVersion": 1,
      "continueOnFail": true,
      "notes": "This markdown node performs automated tasks as part of the workflow."
    },
    {
      "id": "8f73d4d6-2473-4fdf-8797-c049d6df6967",
      "name": "Lemlist Trigger - On new reply",
      "type": "n8n-nodes-base.lemlistTrigger",
      "position": [
        -1600,
        980
      ],
      "webhookId": "039bb443-8d2a-4eb3-9c16-772943a46db7",
      "parameters": {
        "event": "emailsReplied",
        "options": {
          "isFirst": true
        }
      },
      "typeVersion": 1,
      "notes": "This lemlistTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1f94d672-0a70-45ad-bf96-72c4aecabcd0",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1700,
        680
      ],
      "parameters": {
        "width": 304.92548549441915,
        "height": 504.9663351162785,
        "content": "### Get your lemlist API key\n\n1. Go to your lemlist account or create one [HERE]({{ $env.WEBHOOK_URL }}\n\n2. Go to Settings -> Integrations\n\n3. Generate your API Key and copy it\n\n4. On this node, click on create new credential and paste your API key"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks...

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: 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": "workflow-102a4134",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.429612",
    "updatedAt": "2025-09-29T07:07:47.429625",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "7786165e-5e74-4614-b065-86db19482b72",
      "name": "Format text with Markdown",
      "type": "n8n-nodes-base.markdown",
      "position": [
        -1200,
        980
      ],
      "parameters": {
        "html": "={{ $json.text }}",
        "options": {},
        "destinationKey": "YOUR_CREDENTIAL_HERE"
      },
      "typeVersion": 1,
      "continueOnFail": true,
      "notes": "This markdown node performs automated tasks as part of the workflow."
    },
    {
      "id": "8f73d4d6-2473-4fdf-8797-c049d6df6967",
      "name": "Lemlist Trigger - On new reply",
      "type": "n8n-nodes-base.lemlistTrigger",
      "position": [
        -1600,
        980
      ],
      "webhookId": "039bb443-8d2a-4eb3-9c16-772943a46db7",
      "parameters": {
        "event": "emailsReplied",
        "options": {
          "isFirst": true
        }
      },
      "typeVersion": 1,
      "notes": "This lemlistTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1f94d672-0a70-45ad-bf96-72c4aecabcd0",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1700,
        680
      ],
      "parameters": {
        "width": 304.92548549441915,
        "height": 504.9663351162785,
        "content": "### Get your lemlist API key\n\n1. Go to your lemlist account or create one [HERE]({{ $env.WEBHOOK_URL }}\n\n2. Go to Settings -> Integrations\n\n3. Generate your API Key and copy it\n\n4. On this node, click on create new credential and paste your API key"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks...

Output:
The workflow has a broken data flow. The node 'df142fcb-f5ec-475d-8f90-c0bd064d390c' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'df142fcb-f5ec-475d-8f90-c0bd064d390c'.

**Impact**: Data from 'df142fcb-f5ec-475d-8f90-c0bd064d390c' 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 'df142fcb-f5ec-475d-8f90-c0bd064d390c' 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": {
  "df142fcb-f5ec-475d-8f90-c0bd064d390c": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'df142fcb-f5ec-475d-8f90-c0bd064d390c' to the workflow.


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": "workflow-40bada4d",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.344306",
    "updatedAt": "2025-09-29T07:07:47.344339",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "ad5b12df-3bdf-4672-99a7-0034664f29ef",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1180,
        120
      ],
      "parameters": {
        "color": 4,
        "width": 420.4803040774015,
        "height": 189.69151356225348,
        "content": "## Reply draft with OpenAI Assistant\nThis workflow automatically transfers content of incoming email messages with specific labels into OpenAI Assitant and returns reply draft. After draft is composed, trigger label is deleted from the thread.\n\n**Please remember to configure your OpenAI Assistant first.**"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "80a93a48-0576-4dfb-817a-34cbc215307a",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -740,
        120
      ],
      "parameters": {
        "width": 451.41125086385614,
        "height": 313.3056033573073,
        "content": "### Schedule trigger and get emails\nRun the workflow in equal intervals and check for threads with specific labels (trigger labels)."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "0dba2603-8012-47d1-8c60-4068924b74cd",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1180,
        340
      ],
      "parameters": {
        "color": 3,
        "width": 421.0932411886662,
        "height": 257.42916378714597,
        "content": "## ...

Output:
The node 'Ask OpenAI Assistant' (type: n8n-nodes-base.noOp) 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": "8gccIjcuf3gvaoEr",
    "name": "OpenAi 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 'Ask OpenAI Assistant' 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": "workflow-522045d2",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.430112",
    "updatedAt": "2025-09-29T07:07:47.430119",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "05096721-e15a-4d2a-83b3-3b31d6435c59",
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "disabled": true,
      "position": [
        -680,
        -140
      ],
      "parameters": {
        "simple": false,
        "filters": {},
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This gmailTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "9eb59c41-fa15-45ee-b343-cf30ac058600",
      "name": "Gmail - Extract Received Headers",
      "type": "n8n-nodes-base.code",
      "position": [
        200,
        -80
      ],
      "parameters": {
        "jsCode": "// Extract the headers object from the JSON\nconst headers = $('Gmail - Set Headers').item.json.headers;\n\n// Find all keys that start with \"received\" (case-insensitive)\nconst receivedHeaders = Object.entries(headers)\n    .filter(([key, value]) => key.toLowerCase() === 'received')\n    .map(([key, value]) => ({ key, value }));\n\n// Return each header as an object\nreturn receivedHeaders.map(header => ({ json: header }));\n"
      },
      "executeOnce": false,
      "typeVersion": 2,
      "notes": "This code node performs automated tasks as part of the workflow."
    },
    {
      "id": "05ba1e0a-1f47-492b-b57c-c82b2b8af99d",
      "name": "Gmail - Extract Original From IP",
      "type": "n8n-nodes-base.set",
      "position": [
        620,
        -80
      ],
      "parameters": {
        "options": {},
        "assignme...

Output:
The node 'Gmail Trigger' (type: n8n-nodes-base.gmailTrigger) 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": {
  "gmailOAuth2": {
    "id": "kkhNhqKpZt6IUZd0",
    "name": "Gmail"
  }
}
```

**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 'Gmail Trigger' node.


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:
{
  "nodes": [
    {
      "id": "fc128eed-1666-46b8-8feb-e6ddf05e85d1",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        380,
        240
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "hours",
              "hoursInterval": 2
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "830708eb-197b-4bf7-95da-893d78329ab2",
      "name": "Strava",
      "type": "n8n-nodes-base.strava",
      "position": [
        380,
        480
      ],
      "parameters": {
        "limit": 10,
        "operation": "getAll"
      },
      "typeVersion": 1.1,
      "notes": "This strava node performs automated tasks as part of the workflow."
    },
    {
      "id": "de776ebf-3ad5-4c4c-b0c8-7bc74cba5446",
      "name": "Code",
      "type": "n8n-nodes-base.code",
      "position": [
        380,
        740
      ],
      "parameters": {
        "jsCode": "// Obt\u00e9n los items del nodo \"Strava\"\nconst stravaItems = $('strava_last').all();\n\n// Obt\u00e9n los items del nodo \"ultimas_id\"\nconst ultimasGuardadasItems = $('saved_last').all();\n\n// Extrae las referencias guardadas en un Set, asegurando el formato como cadena\nconst referenciasGuardadas = new Set(\n    ultimasGuardadasItems.map(item => String(item.json.id))\n);\n\n// Filtra los items de \"Strava\" cuyos IDs no est\u00e9n en las referencias guardadas\nconst filteredItems = stravaItems.filter(item => {\n    // Convertir el ID actual de Strava a cadena para comparar correctamente\n    return !referenciasGuardadas.has(String(item.json.id));\n});\n\n// Depuraci\u00f3n: imprime las referencias y los resultados\nconsole.log('Referencias guardadas:', [...referenciasGuardadas]);\nconsole.log('Items filtrados:', filteredItems);\n\n// Devuelve los items filtrados\nreturn ...

Output:
In node 'Google Sheets', the parameter 'operation' contains an expression that references undefined data.

**Faulty Expression**: `={{ $items[999].json.value }}`
**Original Value**: `append`

**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 'Google Sheets' parameter 'operation'.


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": "workflow-21ae810c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.506752",
    "updatedAt": "2025-09-29T07:07:47.506770",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "a9a92b8a-05cf-4d9e-ae01-be3b17346893",
      "name": "Parse Webhook",
      "type": "n8n-nodes-base.set",
      "position": [
        -560,
        660
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "e63f9299-a19d-4ba1-93b0-59f458769fb2",
              "name": "response",
              "type": "object",
              "value": "={{ $json.body.payload }}"
            }
          ]
        }
      },
      "typeVersion": 3.3,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "f999011b-e54d-4514-94ec-4d544af4d145",
      "name": "Close Modal Popup",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        -160,
        1120
      ],
      "parameters": {
        "options": {},
        "respondWith": "noData"
      },
      "typeVersion": 1.1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "a16d64a0-fe07-4cae-b458-a91937e57a4e",
      "name": "Route Message",
      "type": "n8n-nodes-base.switch",
      "position": [
        -380,
        660
      ],
      "parameters": {
        "rules": {
          "values": [
            {
              "outputKey": "YOUR_CREDENTIAL_HERE",
              "conditions": {
                "options": {
                  "version": 1,
                  "leftValue": "",
                  "caseSensitive": true,
                  "typeValidation": "strict"
                },
                "combinator": "and",
                "conditions": [
   ...

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:
{
  "meta": {
    "instanceId": "workflow-5a167a30",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.496198",
    "updatedAt": "2025-09-29T07:07:47.496212",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "bdc398f0-a882-4fbe-ac37-7ca7e15a1081",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2080,
        -200
      ],
      "parameters": {
        "width": 460,
        "height": 340,
        "content": "![Tutorial]({{ $env.WEBHOOK_URL }}\n[\ud83c\udfa5 Check My Tutorial]({{ $env.WEBHOOK_URL }}"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "d132a584-770e-438c-bd98-28a9c1afa780",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        1000,
        120
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "d51eec9d-a177-4f5e-89e5-c73b6109f5ce",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        2100,
        640
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "41da741b-1c1d-4d41-9a96-85cadacd1c8e",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1000,
        -200
      ],
      "parameters": {
        "color": 7,
        "width": 1040,
        "height": 460,
        "content": "### 1. First Block: audit the page to extract all the images with their respective alternative text\nThis workflow sends an HTTP re...

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: 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": "workflow-e17d9324",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.488787",
    "updatedAt": "2025-09-29T07:07:47.488872",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "d74c545f-17ab-47f7-bb2a-93c9e9673bab",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        460,
        -20
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 1,
              "triggerAtMinute": 30
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "fc54b674-dc64-49ad-819d-66a4e416efc2",
      "name": "Get all n8n Workflows",
      "type": "n8n-nodes-base.n8n",
      "position": [
        680,
        -20
      ],
      "parameters": {
        "filters": {},
        "requestOptions": {}
      },
      "credentials": {
        "n8nApi": {
          "id": "WR8oA7tQqdurDv3Y",
          "name": "n8n account"
        }
      },
      "typeVersion": 1,
      "notes": "This n8n node performs automated tasks as part of the workflow."
    },
    {
      "id": "b23cd260-8e68-42e7-935c-a658ae35cccd",
      "name": "Backup to Google Drive2",
      "type": "n8n-nodes-base.googleDrive",
      "onError": "continueErrorOutput",
      "position": [
        1260,
        400
      ],
      "parameters": {
        "fileId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $json.id }}"
        },
        "options": {},
        "operation": "update",
        "changeFileContent": true,
        "newUpdatedFileName": "={{  $('Workflow Data').item.json.name + \"_\" + $('Workflow Data').item.json.id+ \".json\"}}"
      },
      "credentials": {
    ...

Output:
The node 'Sticky Note8' 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 Note8'.


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": "3JsfhcDcjqxx0hr3"
  "meta": {
    "instanceId": "workflow-1b2991ea",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.477124",
    "updatedAt": "2025-09-29T07:07:47.477141",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Extract And Decode Google News RSS URLs to Clean Article Links",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "cdb0a726-e961-40ae-b679-43f7bd73650d",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        560,
        1240
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "028ddd3b-069c-43be-ad56-8f898805fccf",
      "name": "Limit",
      "type": "n8n-nodes-base.limit",
      "position": [
        1040,
        1000
      ],
      "parameters": {
        "maxItems": 5
      },
      "typeVersion": 1,
      "notes": "This limit node performs automated tasks as part of the workflow."
    },
    {
      "id": "2215bfdc-1e6e-475c-9753-b05fd5b0d63a",
      "name": "Reading Google News RSS",
      "type": "n8n-nodes-base.rssFeedRead",
      "position": [
        840,
        1000
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
        "options": {
          "ignoreSSL": false
        }
      },
      "typeVersion": 1.1,
      "notes": "This rssFeedRead node performs automated tasks as part of the workflow."
    },
    {
      "id": "23b50dac-9506-41cb-8b57-15373468ab3c",
      "name": "Decoded url",
      "type": "n8n-nodes-base.set",
      "position": [
        1520,
        1420
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
...

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: 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": "4Tq5HZBdETVe7jEb",
  "meta": {
    "instanceId": "workflow-4b03b82a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.576435",
    "updatedAt": "2025-09-29T07:07:47.576451",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\u26a1AI-Powered YouTube Playlist & Video Summarization and Analysis v2",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "trigger-ac330b23",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "id": "505077d1-a2e4-4b0d-99d6-756940022c3d",
      "name": "Google Gemini Chat Model1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -440,
        -40
      ],
      "parameters": {
        "options": {},
        "modelName": "models/gemini-2.0-pro-exp"
      },
      "credentials": {
        "googlePalmApi": {
          "id": "2zwuT5znDglBrUCO",
          "name": "Google Gemini(PaLM) Api account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatGoogleGemini node performs automated tasks as part of the workflow."
    },
    {
      "id": "5da369db-b801-4653-888d-0e6042620298",
      "name": "Handle Queries",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -160,
        -280
      ],
      "parameters": {
        "text": "={{ $('Chat').item.json.chatInput }}",
        "options": {
          "systemMessage": "=You are an intelligent assistant that can respond to queries related to the content of a Youtube Playlist or a single Video.\n\n# YOUR TASK\nDecide if the user has provided the info required and reply accordingly. If there is no url in context you have to suggest the user to provide one. \n\n\n1. If the user provided a ...

Output:
The node 'Process Status' 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 'Process Status'.


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:
{
  "nodes": [
    {
      "id": "a99b3164-fe36-4dde-9525-110c1ae08afb",
      "name": "Convert raw to base64",
      "type": "n8n-nodes-base.code",
      "position": [
        3320,
        580
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const encoded = Buffer.from($json.raw).toString('base64');\n\nreturn { encoded };"
      },
      "typeVersion": 2,
      "notes": "This code node performs automated tasks as part of the workflow."
    },
    {
      "id": "f0f731bd-7b2f-4c39-bc06-42fd57bc4ae8",
      "name": "Add email draft to thread",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        3580,
        580
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\"message\":{\"raw\":\"{{ $json.encoded }}\", \"threadId\": \"{{ $('Map fields for further processing').item.json[\"threadId\"] }}\"}}",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "typeVersion": 4.1,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "c1ce3400-4582-46c7-a85d-8fa9c325ff7b",
      "name": "Remove AI label from email",
      "type": "n8n-nodes-base.gmail",
      "position": [
        3820,
        580
      ],
      "parameters": {
        "resource": "thread",
        "threadId": "={{ $('Map fields for further processing').item.json[\"threadId\"] }}",
        "operation": "removeLabels"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "uBcIMfsTtKjexw7I",
          "name": "Gmail (workfloowstutorial@gmail.com)"
        }
      },
      "typeVersion": 2.1,
      "notes": "This gmail node performs automated tasks as part of the workflow."
    },
    {
      "id": "65f0508a-ca2e-49ce-b02f-ef6505b5e983",
      ...

Output:
The node 'Add email draft to thread' (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": {
  "gmailOAuth2": {
    "id": "uBcIMfsTtKjexw7I",
    "name": "Gmail (workfloowstutorial@gmail.com)"
  }
}
```

**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 'Add email draft to thread' 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": "H9uAqvTaO7nTFdsH",
  "meta": {
    "instanceId": "workflow-cef1aa33",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.658377",
    "updatedAt": "2025-09-29T07:07:47.658401",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Linkedin Chrome Extensions",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "b203fb9c-cc9a-4b29-848f-44ce7272167e",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        600,
        400
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "4e89a46b-d6c7-48e4-a432-fbb091e61f47",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        1560,
        400
      ],
      "parameters": {
        "options": {},
        "batchSize": 2
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "e803d8be-2748-4a74-9ef8-ccb3e0e2bf49",
      "name": "Limit",
      "type": "n8n-nodes-base.limit",
      "notes": "Only process 200 items per run",
      "position": [
        1340,
        400
      ],
      "parameters": {
        "maxItems": 200
      },
      "notesInFlow": true,
      "typeVersion": 1
    },
    {
      "id": "ac196ec9-d78a-441b-8d78-4a86830865a1",
      "name": "Set extension IDs var",
      "type": "n8n-nodes-base.code",
      "position": [
        820,
        400
      ],
      "parameters": {
        "jsCode": "let gg = [\n    {\n        \"id\": \"aaidboaeckiboobjhialkmehjganhbgk\",\n        \"file\": \"mmt-srcwl-dznlv-surdqixjeg/images/ios-arrow-down.svg\"\n    },\n    {...

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: 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:
{
  "id": "ThLx9WKLEujJHrvW",
  "meta": {
    "instanceId": "workflow-f7469ebf",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.646665",
    "updatedAt": "2025-09-29T07:07:47.646678",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Github Releases",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "597d4aa3-e56a-4831-a0a8-6414e6e56de3",
      "name": "Limit",
      "type": "n8n-nodes-base.limit",
      "position": [
        600,
        380
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This limit node performs automated tasks as part of the workflow."
    },
    {
      "id": "731ac3c8-9c24-4f73-aad1-f96f359cf0f7",
      "name": "Loop",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        40,
        255
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "150d10c1-97ee-48b2-8d78-0bcce9776f7c",
      "name": "Edit Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        1440,
        560
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "7cbf2c0f-f242-4106-95c3-684d1b0959b1",
              "name": "name",
              "type": "string",
              "value": "={{ $('Loop').item.json.name }}"
            },
            {
              "id": "cdd6bd5d-d4b8-4656-8b01-1521f870b3d9",
              "name": "title",
              "type": "string",
              "value": "={{ $('Limit').item.json.title }}"
            },
            {
              "id": "61164f4d-d97c-4588-a54a-81b230b2cf3b",
              "name": "link",
              "type": "stri...

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": "b8a4IwiwD9SlgF42",
  "meta": {
    "instanceId": "workflow-91e66deb",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.909668",
    "updatedAt": "2025-09-29T07:07:47.909683",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\ud83d\udd25\ud83d\udcc8\ud83e\udd16 AI Agent  for n8n Creators Leaderboard - Find Popular Workflows",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "fcda047d-b609-4791-b3ae-f359d0c6a071",
      "name": "stats_aggregate_creators",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -1240,
        1280
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {}
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "fa1f51fd-6019-4d47-b17e-8c5621e6ab4c",
      "name": "stats_aggregate_workflows",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -1240,
        1500
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {}
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "34c2d0d3-0474-4a69-b1a5-14c9021865cd",
      "name": "Global Variables",
      "type": "n8n-nodes-base.set",
      "position": [
        -1660,
        1480
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "4bcb91c6-d250-4cb4-8ee1-022df13550e1",
              "name": "path",
              "type": "string",
              "value": "{{ $env.WEBHOOK_URL }}"
            },
            {
              "id": "a910a798-0bfe-41b1-a4f1-41390c7f6997",
              "name": "...

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: 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": "workflow-4702f21a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.030463",
    "updatedAt": "2025-09-29T07:07:48.030497",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "02628817-d072-4caa-b935-945d09f57a85",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        0,
        0
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "7361f9a8-d834-49d3-b0c1-bb4510f654cc",
      "name": "Gmail",
      "type": "n8n-nodes-base.gmail",
      "position": [
        220,
        0
      ],
      "webhookId": "326419f6-008b-4814-b55d-efaae118eab7",
      "parameters": {
        "limit": 1,
        "simple": false,
        "filters": {
          "sender": "decodeai@ghost.io"
        },
        "options": {},
        "operation": "getAll"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "pwMK2jDEWY5arMX3",
          "name": "Gmail account"
        }
      },
      "typeVersion": 2.1,
      "notes": "This gmail node performs automated tasks as part of the workflow."
    },
    {
      "id": "39e63d5f-db0d-4fc6-a5e8-a9ac3c2a703c",
      "name": "Split Out",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        816,
        0
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "message.content.news_items"
      },
      "typeVersion": 1,
      "notes": "This splitOut node performs automated tasks as part of the workflow."
    },
    {
      "id": "70e64a00-8dc0-4ef4-a4fd-3ac2e50c8fb3",
      "name": "Extract News Items",
      "type": "n8n-nodes-base.noOp",
      "position": [
        440,
        0
      ],
      "parameters": {
 ...

Output:
The node 'Create LinkedIn Posts' (type: n8n-nodes-base.noOp) 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": "29u49HnATSs6YuKN",
    "name": "OpenAi 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 'Create LinkedIn Posts' node.


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:
{
  "id": "0KZs18Ti2KXKoLIr",
  "meta": {
    "instanceId": "workflow-be39a37a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.008383",
    "updatedAt": "2025-09-29T07:07:48.008395",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\u2728\ud83e\ude77Automated Social Media Content Publishing Factory + System Prompt Composition",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "74fb48a6-1acd-4693-9b8e-39b36c5649a9",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -520,
        -2080
      ],
      "webhookId": "faddb40a-7048-4398-a0f9-d239a19c32ce",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "09f4a998-2d69-4683-9251-2694a77efeba",
      "name": "Sticky Note20",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -600,
        -1720
      ],
      "parameters": {
        "color": 7,
        "height": 240,
        "content": "## LLM"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "03b93e0b-a917-41f6-b99e-5a27ad07cd3e",
      "name": "Sticky Note21",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -600,
        -1460
      ],
      "parameters": {
        "color": 7,
        "height": 240,
        "content": "## Chat Memory"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "b6c61fe5-a519-4bdb-8641-3149362fbb54",
      "name": "Sticky Note22",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
  ...

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: 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:
{
  "id": "U9RofpXSIIUg12f9",
  "meta": {
    "instanceId": "workflow-c3c2c582",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.152683",
    "updatedAt": "2025-09-29T07:07:48.152694",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "AI Social Media Publisher from WordPress",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f5bb7898-44eb-45bf-b199-2146c8e901f6",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -220,
        -80
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "b1977304-fbbf-4bb5-924a-e5db036bca91",
      "name": "Google Sheets",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        0,
        -80
      ],
      "parameters": {
        "options": {
          "returnFirstMatch": true
        },
        "filtersUI": {
          "values": [
            {
              "lookupColumn": "TWITTER"
            }
          ]
        },
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Foglio1"
        },
        "documentId": {
          "__rl": true,
          "mode": "list",
          "value": "1suPQNdgoAzrklleN4ok2mZnsq0GK1dt59oIHv8JWX5U",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Social Media post"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "JYR6a64Qecd6t8Hb",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.5,
      "notes": "This googleSheets node pe...

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: 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:
{
  "id": "0KZs18Ti2KXKoLIr",
  "meta": {
    "instanceId": "workflow-88075550",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.179026",
    "updatedAt": "2025-09-29T07:07:48.179044",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\u2728\ud83e\ude77Automated Social Media Content Publishing Factory + System Prompt Composition",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "74fb48a6-1acd-4693-9b8e-39b36c5649a9",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -520,
        -2080
      ],
      "webhookId": "faddb40a-7048-4398-a0f9-d239a19c32ce",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "09f4a998-2d69-4683-9251-2694a77efeba",
      "name": "Sticky Note20",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -600,
        -1720
      ],
      "parameters": {
        "color": 7,
        "height": 240,
        "content": "## LLM"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "03b93e0b-a917-41f6-b99e-5a27ad07cd3e",
      "name": "Sticky Note21",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -600,
        -1460
      ],
      "parameters": {
        "color": 7,
        "height": 240,
        "content": "## Chat Memory"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "b6c61fe5-a519-4bdb-8641-3149362fbb54",
      "name": "Sticky Note22",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
  ...

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: 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": "0pVPSW4PzJZLLqSf:
  "meta": {
    "instanceId": "workflow-270b3aa7",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.226099",
    "updatedAt": "2025-09-29T07:07:48.226111",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Notion to Linkedin",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "d922cf0c-f1c2-40ff-927c-d0d3e2fb7f27",
      "name": "Merge",
      "type": "n8n-nodes-base.merge",
      "position": [
        2140,
        460
      ],
      "parameters": {
        "mode": "combine",
        "options": {},
        "combinationMode": "mergeByPosition"
      },
      "typeVersion": 2.1,
      "notes": "This merge node performs automated tasks as part of the workflow."
    },
    {
      "id": "8c5f68d8-f11d-4b37-b0d8-3abd1b681b56",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        780,
        440
      ],
      "parameters": {
        "color": 4,
        "height": 141.4092845296238,
        "content": "## Start the flow every day at the same time"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "d10de4f3-6e90-474f-bd68-25aae2037b7b",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1240,
        312.5835468325357
      ],
      "parameters": {
        "color": 6,
        "width": 367.12018536439575,
        "height": 382.294335406698,
        "content": "## Fetch the day's post from my Notion database"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "a63bcc85-ec8b-424f-a53c-e4c07db3c7c8",
      "name": "Sticky Note2",
      "type": "n8...

Output: The JSON contains an unclosed string. All string values must be enclosed in double quotes.

Add the missing closing quote to complete the string.


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": "pDLtBJkNSXXWSvB0",
  "meta": {
    "instanceId": "workflow-3be62685",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.240202",
    "updatedAt": "2025-09-29T07:07:48.240219",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Training Feedback Automation",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "6cdd7521-a16c-4e1a-9b18-c232660522c8",
      "name": "Airtable Trigger",
      "type": "n8n-nodes-base.airtableTrigger",
      "position": [
        160,
        680
      ],
      "parameters": {
        "baseId": {
          "__rl": true,
          "mode": "id",
          "value": "app216gZPY8ax1Qgd"
        },
        "tableId": {
          "__rl": true,
          "mode": "id",
          "value": "tblaKkOK6RZ4cgXGI"
        },
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "triggerField": "Created",
        "authentication": "{{ $credentials.airtableOAuth2Api }}",
        "additionalFields": {}
      },
      "credentials": {
        "airtableOAuth2Api": {
          "id": "qYu4nditWNzeLITf",
          "name": "Airtable account"
        }
      },
      "typeVersion": 1,
      "notes": "This airtableTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "faeb9069-2f25-419c-8192-5ed69a49d192",
      "name": "Webhook - Action Task Poor",
      "type": "n8n-nodes-base.webhook",
      "position": [
        180,
        140
      ],
      "webhookId": "4ff46f8a-e1d0-4ad9-8dae-99de53838aaf",
      "parameters": {
        "path": "4ff46f8a-e1d0-4ad9-8dae-99de53838aaf",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 1.1,
      "notes": "This webhook node performs automated tasks as par...

Output:
The workflow has a broken data flow. The node 'faeb9069-2f25-419c-8192-5ed69a49d192' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'faeb9069-2f25-419c-8192-5ed69a49d192'.

**Impact**: Data from 'faeb9069-2f25-419c-8192-5ed69a49d192' 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 'faeb9069-2f25-419c-8192-5ed69a49d192' 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": {
  "faeb9069-2f25-419c-8192-5ed69a49d192": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'faeb9069-2f25-419c-8192-5ed69a49d192' 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:
{
  "id": "yF1HNe2ucaE81fNl",
  "meta": {
    "instanceId": "workflow-46d6adaf",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.262743",
    "updatedAt": "2025-09-29T07:07:48.262757",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Linkedin Automation",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "fa012332-1c95-4460-b1d1-9d54441c9179",
      "name": "Get List of records used",
      "type": "n8n-nodes-base.airtable",
      "position": [
        -40,
        -80
      ],
      "parameters": {
        "base": {
          "__rl": true,
          "mode": "list",
          "value": "appt6kHkRkLlUh033",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Linkdin"
        },
        "table": {
          "__rl": true,
          "mode": "list",
          "value": "tbliloartO26TD5TG",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Used Articles"
        },
        "options": {},
        "operation": "search"
      },
      "credentials": {
        "airtableTokenApi": {
          "id": "9bPeAvakB1tkDxsW",
          "name": "Airtable Personal Access Token account"
        }
      },
      "typeVersion": 2.1,
      "alwaysOutputData": true,
      "notes": "This airtable node performs automated tasks as part of the workflow."
    },
    {
      "id": "2d99b3b7-2fcd-46bf-8859-f41e94cb5ae1",
      "name": "Update the used node",
      "type": "n8n-nodes-base.airtable",
      "position": [
        200,
        600
      ],
      "parameters": {
        "base": {
          "__rl": true,
          "mode": "list",
          "value": "appt6kHkRkLlUh033",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Linkdin"
        },
        "table": {
          ...

Output:
In node 'Update the used node', the parameter 'operation' contains an expression that references undefined data.

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `create`

**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 'Update the used node' parameter 'operation'.


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": "workflow-80923317",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.242942",
    "updatedAt": "2025-09-29T07:07:48.242956",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "c5525f47-4d91-4b98-87bb-566b90da64a1",
      "name": "Local File Trigger",
      "type": "n8n-nodes-base.localFileTrigger",
      "position": [
        660,
        700
      ],
      "parameters": {
        "path": "/home/node/host_mount/local_file_search",
        "events": [
          "add",
          "change",
          "unlink"
        ],
        "options": {
          "awaitWriteFinish": true
        },
        "triggerOn": "folder"
      },
      "typeVersion": 1,
      "notes": "This localFileTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "804334d6-e34d-40d1-9555-b331ffe66f6f",
      "name": "When clicking \"Test workflow\"",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        664.5766613599001,
        881.8474780113352
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "7ab0e284-b667-4d1f-8ceb-fb05e4081a06",
      "name": "Set Variables",
      "type": "n8n-nodes-base.set",
      "position": [
        840,
        700
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "35ea70c4-8669-4975-a68d-bbaa094713c0",
              "name": "directory",
              "type": "string",
              "value": "/home/node/BankStatements"
            },
            {
              "id": "1d081d19-ff4e-462a-9cbe-7af2244bf87f",
              "name": "file_added",
              "type": "string",
              "value": "={{ $json.event === 'add' ...

Output:
The node 'Has Existing Point?' 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 'Has Existing Point?'.


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": "workflow-d08f365f",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:48.276993",
    "updatedAt": "2025-09-29T07:07:48.277005",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "bebbf9cf-8103-4694-a3be-ae3ee1e9ebaf",
      "name": "Watch For Bank Statements",
      "type": "n8n-nodes-base.localFileTrigger",
      "position": [
        780,
        400
      ],
      "parameters": {
        "path": "/home/node/host_mount/reconciliation_project",
        "events": [
          "add"
        ],
        "options": {
          "ignored": "!**/*.csv"
        },
        "triggerOn": "folder"
      },
      "typeVersion": 1,
      "notes": "This localFileTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "eca26bed-ba44-4507-97d4-9154e26908a5",
      "name": "Get Tenant Details",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1660,
        540
      ],
      "parameters": {
        "name": "get_tenant_details",
        "jsCode": "const xlsx = require('xlsx');\n\nconst { spreadsheet_location } = $('Set Variables').item.json;\nconst sheetName = 'tenants';\n\nconst wb = xlsx.readFile(spreadsheet_location, { sheets: [sheetName] });\nconst rows = xlsx.utils.sheet_to_json(wb.Sheets[sheetName], { raw: false });\n\nconst queryToList = [].concat(typeof query === 'string' ? query.split(',') : query);\n\nconst result = queryToList.map(q => (\n  rows.find(row =>\n    row['Tenant Name'].toLowerCase() === q.toLowerCase()\n    || row['Tenant ID'].toLowerCase() === q.toString().toLowerCase()\n  )\n));\n\nreturn result ? JSON.stringify(result) : `No results were found for ${query}`;",
        "description": "Call this tool to get a tenant's details which includes their tenancy terms, rent amount and any notes attached to their account. Pass in one or a...

Output:
In node 'Sticky Note1', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `## Step 2. Delegate to AI Agent to Quickly Identify Issues with Rental Payments
[Read more about AI Agents]({{ $env.WEBHOOK_URL }}

An AI agent can not only check against agreed amounts and compare due dates but also consider contract exceptions and tenant notes before deciding to take action. In a scenario of 10+ of tenants, this can save a lot of admin time.

For this demo, we're using a remote LLM Model but this can easily be swapped out for other self-hosted LLMS models that support function calling.`

**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 Note1' parameter 'content'.