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": "7Gw4IfHaVMDSj70o"
  "meta": {
    "instanceId": "workflow-a4464de3",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.077282",
    "updatedAt": "2025-09-29T07:08:01.077296",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Convert Squarespace Profiles to Shopify Customers in Google Sheets",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "17b7e952-ba9b-4067-9c98-a69ea09f7e69",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -800,
        -420
      ],
      "webhookId": "e09976b5-7525-422b-9834-3bc6e1c4a1b6",
      "parameters": {
        "path": "submit-profiles",
        "options": {
          "allowedOrigins": "*"
        },
        "httpMethod": "POST"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "7e149be3-19da-4320-8910-40ef0900628a",
      "name": "Shopify Customers",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        420,
        -220
      ],
      "parameters": {
        "columns": {
          "value": {
            "Tags": "=n8n, squarespace, {{ $json['Last Order Date'] ? \"ground-control,\" : \"\" }}",
            "Email": "={{ $json.Email }}",
            "Phone": "={{ $json['Billing Phone Number'] }}",
            "Last Name": "={{ $json['Last Name'] }}",
            "First Name": "={{ $json['First Name'] }}",
            "Default Address Zip": "={{ $json['Billing Zip'] }}",
            "Default Address City": "={{ $json['Billing City'] }}",
            "Default Address Phone": "={{ $json['Billing Phone Number'] }}",
            "Accepts Email Marketing": "yes",
            "Default Address Company": "={{ $json['Billing Name'] }}",
            "Default Address...

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: 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-3709a2c5",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.110775",
    "updatedAt": "2025-09-29T07:08:01.110794",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "a8b14ffd-4a8b-4a3d-ba54-5997197e5457",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -2880,
        340
      ],
      "parameters": {
        "color": 6,
        "width": 429.96763122593137,
        "height": 322,
        "content": "### Get Apprropraite Data\nThese Nodes are to extract only the Required Data from the Webhook Node"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "c8ae8766-3942-4b8d-8815-9e96ab9dc1de",
      "name": "Sticky Note6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -840,
        340
      ],
      "parameters": {
        "color": 5,
        "width": 677,
        "height": 660,
        "content": "### N8N has the Node to convert PDF to Text, but PDF should be converted from Text. Scanned Image PDF will not be converted. \n\nYou can use ohter nodes here to convert word file to text or JPG to Text, possiblities are limitless."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "529f5756-c1a2-4c41-8245-38164543eb8e",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1334.2232779572741,
        340
      ],
      "parameters": {
        "color": 7,
        "width": 477.2230145794152,
        "height": 648.5051458745238,
        "content": "### Download the File.\nIf you are using S3 to Upload attachments you can use S3 node here to download the attachment\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.

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:
{
  "meta": {
    "instanceId": "workflow-92b83a87",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.147725",
    "updatedAt": "2025-09-29T07:08:01.147743",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "adfda9cb-1d77-4c54-b3ea-e7bf438a48af",
      "name": "Parse Webhook",
      "type": "n8n-nodes-base.set",
      "position": [
        760,
        640
      ],
      "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": "b3e0e490-18e0-44b5-a960-0fdbf8422515",
      "name": "Qualys Create Report",
      "type": "n8n-nodes-base.executeWorkflow",
      "position": [
        1720,
        1740
      ],
      "parameters": {
        "options": {},
        "workflowId": "icSLX102kSS9zNdK"
      },
      "typeVersion": 1,
      "notes": "This executeWorkflow node performs automated tasks as part of the workflow."
    },
    {
      "id": "80ae074b-bda5-4638-b46f-246a1b9530ae",
      "name": "Required Report Variables",
      "type": "n8n-nodes-base.set",
      "position": [
        1520,
        1740
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "47cd1502-3039-4661-a6b1-e20a74056550",
              "name": "report_title",
              "type": "string",
              "value": "={{ $json.response.view.state.values.report_title.report_title_input.value }}"
            },
            {
              "id": "6a8a0cbf-bf3e-4702-9...

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

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

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

**Solutions**:

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

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

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

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

Fix data type conversion in 'Sticky Note3'.


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-34ac67a0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.232730",
    "updatedAt": "2025-09-29T07:08:01.232751",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "adfda9cb-1d77-4c54-b3ea-e7bf438a48af",
      "name": "Parse Webhook",
      "type": "n8n-nodes-base.set",
      "position": [
        760,
        640
      ],
      "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": "b3e0e490-18e0-44b5-a960-0fdbf8422515",
      "name": "Qualys Create Report",
      "type": "n8n-nodes-base.executeWorkflow",
      "position": [
        1720,
        1740
      ],
      "parameters": {
        "options": {},
        "workflowId": "icSLX102kSS9zNdK"
      },
      "typeVersion": 1,
      "notes": "This executeWorkflow node performs automated tasks as part of the workflow."
    },
    {
      "id": "80ae074b-bda5-4638-b46f-246a1b9530ae",
      "name": "Required Report Variables",
      "type": "n8n-nodes-base.set",
      "position": [
        1520,
        1740
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "47cd1502-3039-4661-a6b1-e20a74056550",
              "name": "report_title",
              "type": "string",
              "value": "={{ $json.response.view.state.values.report_title.report_title_input.value }}"
            },
            {
              "id": "6a8a0cbf-bf3e-4702-9...

Output:
The workflow has a broken data flow. The node '63b537e8-50c9-479d-96a4-54e621689a23' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for '63b537e8-50c9-479d-96a4-54e621689a23'.

**Impact**: Data from '63b537e8-50c9-479d-96a4-54e621689a23' 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 '63b537e8-50c9-479d-96a4-54e621689a23' 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": {
  "63b537e8-50c9-479d-96a4-54e621689a23": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```


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": "1dnr1k4MAVbDiBmO",
  "meta": {
    "instanceId": "workflow-4e7fff2b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.246174",
    "updatedAt": "2025-09-29T07:08:01.246185",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Get event triggered notifications / updates on preferred messaging channels with TwentyCRM",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5e823dd0-f50a-49ad-9e9a-7d0aee656b9c",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        620,
        580
      ],
      "parameters": {
        "color": 7,
        "width": 239.36440675415446,
        "height": 80,
        "content": "**1. \u261d\ufe0f Set up `On new TwentyCRM event` Trigger's url at webhook in TwentyCRM**"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "0eb98b9a-2f47-4199-a7e5-fe1f9c112721",
      "name": "filter required data #eventType mandatory",
      "type": "n8n-nodes-base.set",
      "position": [
        860,
        380
      ],
      "parameters": {
        "options": {
          "dotNotation": true,
          "ignoreConversionErrors": true
        },
        "assignments": {
          "assignments": [
            {
              "id": "9e24e3f4-e750-4b50-b467-24612717f6a0",
              "name": "eventName",
              "type": "string",
              "value": "={{ $json.body.eventName }}"
            },
            {
              "id": "b6aa9813-39bf-4b3d-9df0-aa93fbf4dc73",
              "name": "objectMetadata.id",
              "type": "string",
              "value": "={{ $json.body.objectMetadata.id }}"
            },
            {
              "id": "8bdff15a-a98a-41ad-89d0-e793c3edb14c",...

Output:
The node 'filter required data #eventType mandatory' 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 'filter required data #eventType mandatory'.


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-ff19009b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.277968",
    "updatedAt": "2025-09-29T07:08:01.277985",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "96ef3bfe-a493-4377-b090-6b2d02d87480",
      "name": "Verify Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1420,
        800
      ],
      "parameters": {
        "options": {
          "responseCode": 200,
          "responseHeaders": {
            "entries": [
              {
                "name": "Content-type",
                "value": "application/json"
              }
            ]
          }
        },
        "respondWith": "json",
        "responseBody": "={\"challenge\":\"{{ $json.body.challenge }}\"}"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "38db6da6-13bf-47a1-b5cb-f06403b309ac",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        2120,
        1220
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "QpFZ2EiM3WGl6Zr3",
          "name": "Marketing OpenAI"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "139b606d-29ae-480d-bde7-458ef45dba01",
      "name": "No Operation, do nothing",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1840,
        700
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This noOp node performs automated tasks as part of the workflow."
    },
    {
      "id": "64acd4c6-cd53-46e5-a29e-40884044b186",
      "name": "Window Bu...

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: 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": "LSH4x5nnNGQbNBkh",
  "meta": {
    "instanceId": "workflow-6e41af4d",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.282155",
    "updatedAt": "2025-09-29T07:08:01.282173",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Notify_user_in_Slack_of_quarantined_email_and_create_Jira_ticket_if_opened",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f0bf5f9b-58c5-4dff-95cc-3af378fc49a3",
      "name": "has email been opened?",
      "type": "n8n-nodes-base.if",
      "position": [
        1280,
        1040
      ],
      "parameters": {
        "conditions": {
          "boolean": [
            {
              "value1": "={{ !!($json.read_at ?? false) }}",
              "value2": true
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "7acb2409-6b67-4500-993f-5beeaecec718",
      "name": "Receive Sublime Security Alert",
      "type": "n8n-nodes-base.webhook",
      "position": [
        840,
        1040
      ],
      "webhookId": "3ea0b887-9caa-477e-b6e4-1d3edf72d11e",
      "parameters": {
        "path": "3ea0b887-9caa-477e-b6e4-1d3edf72d11e",
        "options": {},
        "httpMethod": "POST",
        "authentication": "{{ $credentials.headerAuth }}"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "a9rnBXHOmqHidbGH",
          "name": "sublimesecurity.com - webhook calling n8n "
        }
      },
      "typeVersion": 1,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "ad876000-e3a4-4f3e-b917-629cc450a15c",
      "name": "Get message details in Sublime Security",
      "type": "n8n-nodes-base.httpRequest",
      "positi...

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

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

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

**Solutions**:

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

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

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

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

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

Add validation for empty or null input data.


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

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

Workflow JSON:
{
  "id": "QOePbDNCilLhfzbs",
  "meta": {
    "instanceId": "workflow-4a4928e6",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.342947",
    "updatedAt": "2025-09-29T07:08:01.342958",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "LINE BOT - Google Sheets Record Receipt",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "c9a6882e-8971-4f8b-8dc4-730e217200f9",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1260,
        100
      ],
      "parameters": {
        "width": 400,
        "height": 500,
        "content": "## Prepare data\n**- Get content image from Line** \n{{ $env.API_BASE_URL }}\n\n**- Get image URL to Binary**"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "b766ad37-ec63-4006-80a7-048307afd23a",
      "name": "Image slip URL in Line",
      "type": "n8n-nodes-base.set",
      "position": [
        -1200,
        300
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "f8b8ac7c-5c5f-452f-a84d-e068bb248eb5",
              "name": "file_url",
              "type": "string",
              "value": "={{ $env.API_BASE_URL }}{{ $json.body.events[0].message.id }}/content"
            }
          ]
        }
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "172ed09e-8caf-4bee-9f09-a9b8b00470f7",
      "name": "Get image to Binary",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -1000,
        300
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {...

Output:
In node 'Sticky Note3', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $env.UNDEFINED_ENV_VAR }}`
**Original Value**: `## Store Data in Google Sheets`

**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 Note3' parameter 'content'.


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": "TfwQRZkTBtykx1rM",
  "meta": {
    "instanceId": "workflow-7aa284fe",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.345370",
    "updatedAt": "2025-09-29T07:08:01.345417",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Enrich Company Data from Google Sheet with OpenAI Agent and Scraper Tool",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "90c02c5e-228e-478b-b06d-424dc0c4f9b9",
      "name": "Structured Output Parser",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1500,
        240
      ],
      "parameters": {
        "schemaType": "manual",
        "inputSchema": "{\n  \"Business Area\": {\n    \"type\": \"string\",\n    \"description\": \"Summary of the company's core activities or industry focus.\"\n  },\n  \"Offers or Product\": {\n    \"type\": \"string\",\n    \"description\": \"Summary of the company's main products or services.\"\n  },\n  \"Value Proposition\": {\n    \"type\": \"string\",\n    \"description\": \"Catchphrase or tagline that represents the company\u2019s value proposition.\"\n  },\n  \"Business Model\": {\n    \"type\": \"string\",\n    \"description\": \"Description of the company's business model, including revenue generation, key partnerships, or unique aspects.\"\n  },\n  \"Ideal Customer Profile\": {\n    \"type\": \"string\",\n    \"description\": \"Description of the ideal customer profile, based on available information.\"\n  },\n  \"Additional Information\": {\n    \"type\": \"object\",\n    \"description\": \"Additional insights or actions if there is insufficient information or if the content does not match a company page.\",\n    \"properties\": {\n      \"Information Sufficiency\": {\n        \"type\": \"string\",\n        \"description\": \"Indicate if the information wa...

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" "V1vbO2m79cFNH59h",
  "meta": {
    "instanceId": "workflow-0fa018a6",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.364934",
    "updatedAt": "2025-09-29T07:08:01.365002",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Basic PDF Digital Sign Service",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "a3aa7495-e5a8-4b7f-882a-e642fae414b8",
      "name": "Validate Key Gen Params",
      "type": "n8n-nodes-base.code",
      "position": [
        -220,
        220
      ],
      "parameters": {
        "jsCode": "// Check required parameters for key generation\nconst requiredParams = [\n  'subjectCN', 'issuerCN', 'serialNumber', \n  'validFrom', 'validTo', 'password'\n];\n\nlet missingParams = [];\nconst requestBody = $input.item.json.body || {}; // Access the body object\n\nfor (const param of requiredParams) {\n  if (!requestBody[param]) {\n    missingParams.push(param);\n  }\n}\n\nif (missingParams.length > 0) {\n  return {\n    json: {\n      success: false,\n      message: `Missing required parameters: ${missingParams.join(', ')}`\n    }\n  };\n}\n\n// Set default output directory if not provided\nconst outputDir = $input.item.json.keyPath || '/tmp';\nconst timestamp = new Date().getTime();\nconst outputPfx = `${outputDir}certificate_${timestamp}.pfx`;\nconst outputPrivateKey = `${outputDir}private_${timestamp}.key`;\nconst outputCertPem = `${outputDir}certificate_${timestamp}.pem`;\n\nreturn {\n  json: {\n    ...requestBody,\n    success: true,\n    outputDir,\n    outputPfx,\n    outputPrivateKey,\n    outputCertPem\n  }\n};\n"
      },
      "typeVersion": 1,
      "notes": "This code node performs automated tasks as part of the workflow."
    },
    {
      "id": "6a463b95-04e4-421d-b6e0-46fb98c85e20",
      "name": "Validate ...

Output: The JSON is missing a colon between a key and its value. JSON requires colons to separate keys from values.

Add the missing colon after the property name.


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": "W1ugowsjzt1SC4hH",
  "meta": {
    "instanceId": "workflow-34e79306",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.379220",
    "updatedAt": "2025-09-29T07:08:01.379233",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Validate Seatable Webhooks with HMAC SHA256 Authentication",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "ec4bdb4f-3c3e-4405-af80-2ad7ab3d57fc",
      "name": "200",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        420,
        -20
      ],
      "parameters": {
        "options": {
          "responseCode": 200
        },
        "respondWith": "noData"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "1b6c9f8c-1b5b-499d-abb5-bb1059b73ce7",
      "name": "403",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        420,
        180
      ],
      "parameters": {
        "options": {
          "responseCode": 403
        },
        "respondWith": "noData"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "e3976bf3-60e0-4c1c-bfdb-22ad336760a5",
      "name": "Calculate sha256",
      "type": "n8n-nodes-base.crypto",
      "position": [
        -20,
        -20
      ],
      "parameters": {
        "type": "SHA256",
        "action": "hmac",
        "binaryData": true,
        "dataPropertyName": "seatable-signature"
      },
      "typeVersion": 1,
      "notes": "This crypto node performs automated tasks as part of the workflow."
    },
    {
      "id": "5e74ba50-e0fe-41e0-9b84-7078f1d150a3",
      "name": "Seatable Webhook",
      "type": "n8n-nodes-base.web...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "id": "YKZBEx4DTf0KGEBR",
  "meta": {
    "instanceId": "workflow-1cced8c0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.454342",
    "updatedAt": "2025-09-29T07:08:01.454401",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Image-Based Data Extraction API using Gemini AI",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "e3448003-5c62-4da6-8fcc-6817915dcbb8",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        40,
        40
      ],
      "webhookId": "18118afb-7fd2-47a5-a474-50813c5b20c8",
      "parameters": {
        "path": "data-extractor",
        "options": {},
        "responseMode": "responseNode"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "3682c6bf-3442-4fba-ab6c-ae29e361ef93",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1180,
        40
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "bfa352d0-68a9-4f33-be54-254a5df22664",
      "name": "Get image from URL",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        280,
        40
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {}
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "c6c8de12-08dc-42e8-9c0e-86e04c7cacc0",
      "name": "Call Gemini API (Flash Lite) with Image",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        760,
        40...

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": "fW6PV9IaePKSMGbN",
  "meta": {
    "instanceId": "workflow-38d6fe00",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.429814",
    "updatedAt": "2025-09-29T07:08:01.429824",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Unique QRcode coupon assignment and validation for Lead Generation system",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5ef4dd1d-39d6-487e-a48d-420b458ac1ee",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -420,
        340
      ],
      "webhookId": "bb832325-8c58-4717-b866-41f8a9714cf2",
      "parameters": {
        "path": "bb832325-8c58-4717-b866-41f8a9714cf2",
        "options": {},
        "responseMode": "responseNode"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "a7102d60-d4bd-450d-92b3-a32e2304b4a9",
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        40,
        340
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "430aee2d-a788-4d7c-ab64-880c900f0058",
              "operator": {
                "type": "string",
                "operation": "exists",
                "singleValue": true
              },
              "leftValue": "={{ $json.qr }}",
              "rightValue": ""
            }
          ]
        }
      },
      "typeVersion": 2.2,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
 ...

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: 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": "hzwyrm761fxBLiG8"
  "meta": {
    "instanceId": "workflow-9c160dc0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.457344",
    "updatedAt": "2025-09-29T07:08:01.457805",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Personal Portfolio Resume CV Chatbot",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "cfe6fd0a-546b-4f5d-8dbd-6ff2dd123a67",
      "name": "Embeddings Google Gemini",
      "type": "n8n-nodes-base.noOp",
      "position": [
        880,
        640
      ],
      "parameters": {
        "modelName": "models/text-embedding-004"
      },
      "credentials": {
        "googlePalmApi": {
          "id": "cSntB2ONStvkOFU7",
          "name": "Google Gemini(PaLM) Api account"
        }
      },
      "typeVersion": 1,
      "notes": "This embeddingsGoogleGemini node performs automated tasks as part of the workflow."
    },
    {
      "id": "bea384d2-a847-467d-a3eb-80e96bfb5a99",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1380,
        380
      ],
      "parameters": {
        "color": 3,
        "width": 660,
        "height": 960,
        "content": "## Set up steps\n\n1. **Google Cloud Project and Vertex AI API**:\n   - Create a Google Cloud project.\n   - Enable the Vertex AI API for your project.\n\n2. **Google AI API Key**:\n   - Obtain a Google AI API key from Google AI Studio.\n\n3. **Pinecone Account**:\n   - Create a free account on the Pinecone website.\n   - Obtain your API key from your Pinecone dashboard.\n   - Create an index named `seanrag` or any other name in your Pinecone project.\n\n4. **Google Drive**:\n   - Create a dedicated folder in your Google Drive to store company documents.\n\n5. **Credentials in n8n**:\n   - Configure the followin...

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


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": "k9abwUyVzl7OCsAl",
  "meta": {
    "instanceId": "workflow-e5bb739b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.496367",
    "updatedAt": "2025-09-29T07:08:01.496381",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Realtime Notion Todoist 2-way Sync Template",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5e0488a3-270d-46b3-8b4b-f4ee459a3016",
      "name": "Get projects",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -700,
        260
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "credentials": {
        "todoistApi": {
          "id": "Dp3VoWGH5IhrK22k",
          "name": "Todoist (mario.haarmann)"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "e52b0a6d-4697-4c42-91c9-6c786752877c",
      "name": "Get sections",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        180,
        260
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "sendQuery": true,
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "queryParameters": {
          "parameters": [
            {
              "name": "project_id",
              "value": "={{ $json.project_id }}"
            }
          ]
        },
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "credentials": {
        "todoistApi": {
          "id": "Dp3VoWGH5IhrK22k",
          "name": "Todoist (mario.haarmann)"
        }
      },
      "typeVe...

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": "yxv7OYbDEnqsqfa9",
  "meta": {
    "instanceId": "workflow-44f17268",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.578756",
    "updatedAt": "2025-09-29T07:08:01.578767",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "WhatsApp starter workflow",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "9b385dfe-fa67-4c2c-83df-e3e02c0ff796",
      "name": "Verify",
      "type": "n8n-nodes-base.webhook",
      "position": [
        700,
        180
      ],
      "webhookId": "793f285b-9da7-4a5e-97ce-f0976c113db5",
      "parameters": {
        "path": "1fea1f5f-81c0-48ad-ae13-41e0f8e474ed",
        "options": {},
        "responseMode": "responseNode"
      },
      "typeVersion": 1.1,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "676efc61-c875-4675-a843-20f98ef1a642",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        920,
        180
      ],
      "parameters": {
        "options": {},
        "respondWith": "text",
        "responseBody": "={{ $json.query['hub.challenge'] }}"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "8dd6d094-415c-40d7-ad2b-4ed9f2d23232",
      "name": "Echo the message back",
      "type": "n8n-nodes-base.whatsApp",
      "position": [
        1140,
        540
      ],
      "parameters": {
        "textBody": "=Echo back: {{ $json.body.entry[0].changes[0].value.messages[0].text.body }}",
        "operation": "send",
        "phoneNumberId": "244242975437240",
        "additionalFields": {},
        "recipientPhoneNumber": "={{ $json.body.entry[0].changes[0].value.messages[0].from ...

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: 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": "trigger-8ab54616",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Wise",
      "type": "n8n-nodes-base.wise",
      "position": [
        470,
        320
      ],
      "parameters": {
        "amount": 500,
        "resource": "quote",
        "operation": "create",
        "profileId": 16138858,
        "sourceCurrency": "EUR",
        "targetCurrency": "EUR",
        "targetAccountId": 147767974
      },
      "typeVersion": 1,
      "id": "1b390d18-7316-4a9f-b182-3e73221674eb",
      "notes": "This wise node performs automated tasks as part of the workflow."
    },
    {
      "name": "Wise1",
      "type": "n8n-nodes-base.wise",
      "position": [
        660,
        320
      ],
      "parameters": {
        "quoteId": "={{$json[\"id\"]}}",
        "resource": "transfer",
        "operation": "create",
        "profileId": 16138858,
        "targetAccountId": 147767974,
        "additionalFields": {
          "reference": "Thank you for the contribution"
        }
      },
      "credentials": {
        "wiseApi": "Wise API Credentials"
      },
      "typeVersion": 1,
      "id": "3526d0fd-18ca-4d65-8526-57f50e6df0be",
      "notes": "This wise node performs automated tasks as part of the workflow."
    },
    {
      "name": "Wise2",
      "type": "n8n-nodes-base.wise",
      "position": [
        870,
        320
      ],
      "parameters": {
        "resource": "transfer",
        "operation": "execute",
        "profileId": 16138858,
        "transferId": "={{$json[\"id\"]}}"
      },
      "credentials": {
        "wiseApi": "Wise API Credentials"
      },
      "typeVersion": 1,
      "id": "d0b2c326-58f6-48ae-b25f-0acad83a4f6a",
      "notes": "This wise node performs automated tasks as part of the workflow."
    },
    {
      "name": "Wise3",
      "type":...

Output:
The node 'Wise' (type: n8n-nodes-base.wise) 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": {
  "wiseApi": "Wise API Credentials"
}
```

**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 'Wise' node.


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": 80,
  "name": "New WooCommerce product to Slack",
  "nodes": [
    {
      "name": "Product Created",
      "type": "n8n-nodes-base.wooCommerceTrigger",
      "position": [
        320,
        500
      ],
      "webhookId": "267c4855-6227-4d33-867e-74600097473e",
      "parameters": {
        "event": "product.created"
      },
      "credentials": {
        "wooCommerceApi": {
          "id": "{{ $credentials.wooCommerceApi.id }}",
          "name": "WooCommerce account"
        }
      },
      "typeVersion": 1,
      "id": "44322593-b23f-4455-91e1-0ce2011ac41e",
      "notes": "This wooCommerceTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "Send to Slack",
      "type": "n8n-nodes-base.slack",
      "position": [
        540,
        500
      ],
      "parameters": {
        "text": ":new: A new product has been added! :new:",
        "channel": "woo-commerce",
        "blocksUi": {
          "blocksValues": []
        },
        "attachments": [
          {
            "color": "#66FF00",
            "fields": {
              "item": [
                {
                  "short": false,
                  "title": "Name",
                  "value": "={{$json[\"name\"]}}"
                },
                {
                  "short": true,
                  "title": "Price",
                  "value": "={{$json[\"regular_price\"]}}"
                },
                {
                  "short": true,
                  "title": "Sale Price",
                  "value": "={{$json[\"sale_price\"]}}"
                },
                {
                  "short": false,
                  "title": "Link",
                  "value": "={{$json[\"permalink\"]}}"
                }
              ]
            },
            "footer": "=Added: {{$json[\"date_created\"]}}"
          }
        ],
        "otherOptions": {}
      },
      "credentials": {
        "slackApi": {
          "id": "{{ $credentials.slackApi.id...

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: 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": 81,
  "name": "New WooCommerce order to Slack",
  "nodes": [
    {
      "name": "Order Created",
      "type": "n8n-nodes-base.wooCommerceTrigger",
      "position": [
        340,
        500
      ],
      "webhookId": "287b4bf4-67ec-4c97-85d9-c0d3e6f59e6b",
      "parameters": {
        "event": "order.created"
      },
      "credentials": {
        "wooCommerceApi": {
          "id": "{{ $credentials.wooCommerceApi.id }}",
          "name": "WooCommerce account"
        }
      },
      "typeVersion": 1,
      "id": "b223822f-38b6-48e1-8a43-db80fc6578b4",
      "notes": "This wooCommerceTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "Send to Slack",
      "type": "n8n-nodes-base.slack",
      "position": [
        780,
        480
      ],
      "parameters": {
        "text": ":sparkles: There is a new order :sparkles:",
        "channel": "woo-commerce",
        "blocksUi": {
          "blocksValues": []
        },
        "attachments": [
          {
            "color": "#66FF00",
            "fields": {
              "item": [
                {
                  "short": true,
                  "title": "Order ID",
                  "value": "={{$json[\"id\"]}}"
                },
                {
                  "short": true,
                  "title": "Status",
                  "value": "={{$json[\"status\"]}}"
                },
                {
                  "short": true,
                  "title": "Total",
                  "value": "={{$json[\"currency_symbol\"]}}{{$json[\"total\"]}}"
                },
                {
                  "short": false,
                  "title": "Link",
                  "value": "={{$node[\"Order Created\"].json[\"_links\"][\"self\"][0][\"href\"]}}"
                }
              ]
            },
            "footer": "=*Ordered:* {{$json[\"date_created\"]}} | *Transaction ID:* {{$json[\"transaction_id\"]}}"
          }
        ],
        "otherOpt...

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: 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": 82,
  "name": "New WooCommerce refund to Slack",
  "nodes": [
    {
      "name": "Order Updated",
      "type": "n8n-nodes-base.wooCommerceTrigger",
      "position": [
        320,
        500
      ],
      "webhookId": "f7736be3-e978-4a17-b936-7ce9f8ccdb72",
      "parameters": {
        "event": "order.updated"
      },
      "credentials": {
        "wooCommerceApi": {
          "id": "{{ $credentials.wooCommerceApi.id }}",
          "name": "WooCommerce account"
        }
      },
      "typeVersion": 1,
      "id": "3d900b59-e613-4414-a4f9-f6dda14af39e",
      "notes": "This wooCommerceTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "If Refund and Over 100",
      "type": "n8n-nodes-base.if",
      "position": [
        540,
        500
      ],
      "parameters": {
        "conditions": {
          "number": [
            {
              "value1": "={{$json[\"total\"]}}",
              "value2": 100,
              "operation": "largerEqual"
            }
          ],
          "string": [
            {
              "value1": "={{$json[\"status\"]}}",
              "value2": "refunded"
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "a297415f-8300-403c-b978-fe8e0ad076af",
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "name": "Send to Slack",
      "type": "n8n-nodes-base.slack",
      "position": [
        780,
        480
      ],
      "parameters": {
        "text": ":x: A refund has been issued :x:",
        "channel": "woo-commerce",
        "blocksUi": {
          "blocksValues": []
        },
        "attachments": [
          {
            "color": "#FF0000",
            "fields": {
              "item": [
                {
                  "short": true,
                  "title": "Order ID",
                  "value": "={{$json[\"id\"]}}"
                },
                {
                  "short": true,
 ...

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: 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-eb97e797",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.638493",
    "updatedAt": "2025-09-29T07:08:01.638587",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "92ffb384-849f-411b-981f-e324190eaae4",
      "name": "Post on Wordpress",
      "type": "n8n-nodes-base.wordpress",
      "position": [
        1340,
        700
      ],
      "parameters": {
        "title": "={{ $json.Title }}",
        "additionalFields": {
          "status": "draft",
          "content": "={{ $json['Blog Body'] }}"
        }
      },
      "typeVersion": 1,
      "notes": "This wordpress node performs automated tasks as part of the workflow."
    },
    {
      "id": "b3148c02-8088-4b81-afa8-1d57bef570e5",
      "name": "Upload Media",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1840,
        700
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "binaryData",
        "sendHeaders": true,
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "headerParameters": {
          "parameters": [
            {
              "name": "content-disposition",
              "value": "=attachment; filename={{ $binary.data.fileName }}.{{ $binary.data.fileExtension }}"
            },
            {
              "name": "content-type",
              "value": "={{ $binary.data.mimeType }}"
            }
          ]
        },
        "inputDataFieldName": "data",
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "typeVersion": 4.1,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "d81ab003-fb36-4570-ab58-65b9a5db38be",
      "name": "Set Featured Image"...

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

**Faulty Expression**: `={{ $json.deeply.nested.undefined.path }}`
**Original Value**: `## SETUP
1. Create a wordpress application and set up the password

2. Have an airtable with the columns
Keyword | Title | Blog content

3. The blog content in this canse is a markdown format generated by AI`

**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'.


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-be7e39e9",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.657532",
    "updatedAt": "2025-09-29T07:08:01.657588",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "c3f63a01-1450-4f97-ab2d-16414613f50c",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        400,
        320
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "bc725e33-353d-4b3d-b65f-eb295053e5cc",
      "name": "Get Wordpress Posts",
      "type": "n8n-nodes-base.wordpress",
      "position": [
        640,
        320
      ],
      "parameters": {
        "options": {
          "status": "publish"
        },
        "operation": "getAll",
        "returnAll": true
      },
      "credentials": {
        "wordpressApi": {
          "id": "xIzhb0T5dm53dkod",
          "name": "Wordpress account"
        }
      },
      "typeVersion": 1,
      "notes": "This wordpress node performs automated tasks as part of the workflow."
    },
    {
      "id": "07ed3f2a-c2b6-4e3c-80d7-425adc6ad36d",
      "name": "Adjust Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        860,
        320
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "39ade710-ebe5-4c4d-9bc8-5ad86a3c76b5",
              "name": "id",
              "type": "number",
              "value": "={{ $json.id }}"
            },
            {
              "id": "2714c21d-5ad3-408b-b91d-aa4513f384f3",
              "name": "title",
              "type": "string",
              "value": "={{ $json.title.rendered }}"
            },
            {
     ...

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: 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": "Mbuax8L8jEmBBYkz",
  "meta": {
    "instanceId": "workflow-0dc11191",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.663935",
    "updatedAt": "2025-09-29T07:08:01.663959",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "The Ultimate Guide to Optimize WordPress Blog Posts with AI",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5c88bf7d-cd9d-4b76-8233-6e5927692e7a",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -540,
        -80
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "d3fc9ed5-9ddc-480d-9fa8-f0a66bb69520",
      "name": "Get context",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        -320,
        -80
      ],
      "parameters": {
        "options": {
          "returnFirstMatch": true
        },
        "filtersUI": {
          "values": [
            {
              "lookupColumn": "ID POST"
            }
          ]
        },
        "sheetName": {
          "__rl": true,
          "mode": "list",
          "value": "gid=0",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Foglio1"
        },
        "documentId": {
          "__rl": true,
          "mode": "list",
          "value": "1WlmjnObleBuHRno_axjc-GjV7Wg9gCoIsOK1PD4TxGU",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Complete Plan Blog post"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "JYR6a64Qecd6t8Hb",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.5,
      "notes": ...

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": [
    {
      "id": "trigger-618f82c2",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Write Binary File",
      "type": "n8n-nodes-base.writeBinaryFile",
      "position": [
        800,
        350
      ],
      "parameters": {
        "fileName": "test.json"
      },
      "typeVersion": 1,
      "id": "e4d71899-e3a8-48d9-bb91-d78ffb7adea0",
      "notes": "This writeBinaryFile node performs automated tasks as part of the workflow."
    },
    {
      "name": "Make Binary",
      "type": "n8n-nodes-base.function",
      "position": [
        600,
        350
      ],
      "parameters": {
        "functionCode": "items[0].binary = {\n  data: {\n    data: new Buffer(JSON.stringify(items[0].json, null, 2)).toString('base64')\n  }\n};\nreturn items;"
      },
      "typeVersion": 1,
      "id": "593f9176-fd51-4d68-8170-e887049e7bf6",
      "notes": "This function node performs automated tasks as part of the workflow."
    },
    {
      "name": "Create Example Data",
      "type": "n8n-nodes-base.function",
      "position": [
        390,
        350
      ],
      "parameters": {
        "functionCode": "items[0].json = {\n  \"text\": \"asdf\",\n  \"number\": 1\n};\nreturn items;"
      },
      "typeVersion": 1,
      "id": "19b836fe-7f34-4192-9f3e-d13805cc7b64",
      "notes": "This function node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-c406e7e6",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "={{ $env.UNDEFINED_ENV_VAR }}",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Writebinaryfile Workflow",
  "description": "Automated workflow: Writebinaryfile Workflow. This workflow pro...

Output:
In node 'Error Handler', the parameter 'message' contains an expression that references undefined data.

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

**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 'Error Handler' parameter 'message'.


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": "trigger-94453e98",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Run Query",
      "type": "n8n-nodes-base.postgres",
      "position": [
        450,
        450
      ],
      "parameters": {
        "query": "SELECT name, ean FROM product",
        "operation": "={{ $items[999].json.value }}"
      },
      "credentials": {
        "postgres": "postgres"
      },
      "typeVersion": 1,
      "id": "91247a9d-0af3-4185-a6af-e04c7a357480",
      "notes": "This postgres node performs automated tasks as part of the workflow."
    },
    {
      "name": "Spreadsheet File",
      "type": "n8n-nodes-base.spreadsheetFile",
      "position": [
        600,
        450
      ],
      "parameters": {
        "operation": "toFile"
      },
      "typeVersion": 1,
      "id": "5d5628be-71bf-4256-8575-601e7cde3a4b",
      "notes": "This spreadsheetFile node performs automated tasks as part of the workflow."
    },
    {
      "name": "Write Binary File",
      "type": "n8n-nodes-base.writeBinaryFile",
      "position": [
        750,
        450
      ],
      "parameters": {
        "fileName": "spreadsheet.xls"
      },
      "typeVersion": 1,
      "id": "30aecc10-471f-450a-b97b-f619301031ac",
      "notes": "This writeBinaryFile node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-fcb71123",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Postgres Workflow",
  "description": "Automated workflow: Postgres Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executio...

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

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

**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 'Run Query' parameter 'operation'.


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

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

Workflow JSON:
{
  "id": "78",
  "name": "Receive updates when a form is submitted in Wufoo",
  "nodes": [
    {
      "name": "Wufoo Trigger",
      "type": "n8n-nodes-base.wufooTrigger",
      "position": [
        1290,
        140
      ],
      "webhookId": "106376c5-b49c-412f-8463-4db23a23c057",
      "parameters": {
        "form": "n8n"
      },
      "typeVersion": 1,
      "id": "18b7a702-c1b7-4582-b266-f938ff8cc0f3",
      "notes": "This wufooTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-e0e6af22",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "connections": {},
  "description": "Automated workflow: Receive updates when a form is submitted in Wufoo. This workflow processes data and performs automated tasks.",
  "meta": {
    "instanceId": "workflow-149cb1e7",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.702941",
    "updatedAt": "2025-09-29T07:08:01.702950",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "notes": "Excellent quality workflow: Receive updates when a form is submitted in Wufoo. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."
}...

Output:
The node 'Wufoo Trigger' (type: n8n-nodes-base.wufooTrigger) 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": {
  "wufooApi": "wufoo"
}
```

**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 'Wufoo Trigger' 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:
{
  "meta": {
    "instanceId": "workflow-cf5ba378",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.699132",
    "updatedAt": "2025-09-29T07:08:01.699142",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "302c87d4-2c92-40a0-9a77-cef4ddd7db6d",
      "name": "XML",
      "type": "n8n-nodes-base.xml",
      "position": [
        840,
        440
      ],
      "parameters": {
        "mode": "jsonToxml",
        "options": {}
      },
      "typeVersion": 1,
      "notes": "This xml node performs automated tasks as part of the workflow."
    },
    {
      "id": "88ba5ee7-4788-452f-9d64-bf192fe90e5f",
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        660,
        440
      ],
      "parameters": {
        "values": {
          "number": [
            {
              "name": "number",
              "value": 1
            }
          ],
          "string": [
            {
              "name": "string",
              "value": "my text"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "6cda9dc3-0fdd-4f3a-aecf-0ff0efd28c33",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1020,
        440
      ],
      "parameters": {
        "options": {
          "responseHeaders": {
            "entries": [
              {
                "name": "content-type",
                "value": "application/xml"
              }
            ]
          }
        },
        "respondWith": "text",
        "responseBody": "={{ $json.data }}"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow...

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:
{
  "nodes": [
    {
      "id": "trigger-606e2824",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        500,
        510
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "id",
              "value": "={{$node[\"GetVideosYT\"].json[\"id\"][\"videoId\"]}}"
            },
            {
              "name": "url",
              "value": "={{ $env.WEBHOOK_URL }}{{$node[\"GetVideosYT\"].json[\"id\"][\"videoId\"]}}"
            },
            {
              "name": "title",
              "value": "={{$node[\"GetVideosYT\"].json[\"snippet\"][\"title\"]}}"
            }
          ],
          "boolean": []
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "a86b8e00-8314-4a4f-8fd2-f88d0b230e86",
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "name": "Function",
      "type": "n8n-nodes-base.function",
      "position": [
        640,
        510
      ],
      "parameters": {
        "functionCode": "const new_items = [];\nconst data = this.getWorkflowStaticData('node');\n\ndata.ids = data.ids || [];\n\nfor (var i=0; i<items.length; i++) {\n  if (data.ids.includes(items[i].json.id)) {\n    break;\n  } else {\n    new_items.push({json: {id: items[i].json.id, url: items[i].json.url, title: items[i].json.title}});\n  }\n}\n\ndata.ids = items.map(item => item.json.id)\nreturn new_items;\n"
      },
      "typeVersion": 1,
      "id": "ff3e26e3-859a-41b1-9ab6-a788848f338b",
      "notes": "This function node performs automated tasks as part of the workflow."
    },
    {
      "name": "CheckTime",
      "type": "n8n-nodes-base.interval",
      "position": [
        210,
        510
      ],...

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-dc503ee5",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.716282",
    "updatedAt": "2025-09-29T07:08:01.716297",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "1c041974-2a1f-4464-be3e-70b8a700f40d",
      "name": "Get ticket",
      "type": "n8n-nodes-base.zendesk",
      "position": [
        460,
        480
      ],
      "parameters": {
        "id": "={{$node[\"On new Zendesk ticket\"].json[\"body\"][\"id\"]}}",
        "operation": "get"
      },
      "credentials": {
        "zendeskApi": {
          "id": "{{ $credentials.zendeskApi.id }}",
          "name": "[UPDATE ME]"
        }
      },
      "typeVersion": 1,
      "notes": "This zendesk node performs automated tasks as part of the workflow."
    },
    {
      "id": "a4a05b2a-2382-44af-8226-a2c60bee1ce3",
      "name": "Create task",
      "type": "n8n-nodes-base.asana",
      "position": [
        1000,
        580
      ],
      "parameters": {
        "name": "={{$node[\"Get ticket\"].json[\"subject\"]}}",
        "workspace": "1177253494675264",
        "otherProperties": {
          "assignee": "1202718619090236",
          "assignee_status": "inbox"
        }
      },
      "credentials": {
        "asanaApi": {
          "id": "{{ $credentials.asanaApi.id }}",
          "name": "[UPDATE ME]"
        }
      },
      "typeVersion": 1,
      "notes": "This asana node performs automated tasks as part of the workflow."
    },
    {
      "id": "55128ee9-9210-4341-bf9a-2e4ea415b668",
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        820,
        480
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$node[\"Determine\"].json[\"Asana GID\"]}}",
              "operation": "isNotEmpty"
         ...

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-fe9d1e93",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.719521",
    "updatedAt": "2025-09-29T07:08:01.719542",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "f0913aa6-4e78-4808-b828-7e9953e71764",
      "name": "Get ticket",
      "type": "n8n-nodes-base.zendesk",
      "position": [
        380,
        480
      ],
      "parameters": {
        "id": "={{$node[\"On new Zendesk ticket\"].json[\"body\"][\"id\"]}}",
        "operation": "get"
      },
      "credentials": {
        "zendeskApi": {
          "id": "{{ $credentials.zendeskApi.id }}",
          "name": "[UPDATE ME]"
        }
      },
      "typeVersion": 1,
      "notes": "This zendesk node performs automated tasks as part of the workflow."
    },
    {
      "id": "f8774217-bc05-4b02-8632-154654f79d5f",
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        780,
        480
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$node[\"Determine\"].json[\"GitHub Issue Number\"]}}",
              "operation": "isNotEmpty"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "6ae7e40b-b75c-41e2-9ba7-bb299f12911a",
      "name": "Update ticket",
      "type": "n8n-nodes-base.zendesk",
      "notes": "Update the Zendesk ticket by adding the Jira issue key to the \"Jira Issue Key\" field.",
      "position": [
        1180,
        580
      ],
      "parameters": {
        "id": "={{$node[\"On new Zendesk ticket\"].json[\"body\"][\"id\"]}}",
        "operation": "update",
        "updateFields": {
          "customFieldsUi": {
            "customFieldsValues": [
              {
        ...

Output:
The node 'Create issue' 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 'Create issue'.


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-46c8ed28",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.723336",
    "updatedAt": "2025-09-29T07:08:01.723354",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "b374f136-0050-40ea-b889-03c1e20a161e",
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        1000,
        300
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$node[\"Determine\"].json[\"Jira issue key\"]}}",
              "operation": "isNotEmpty"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "52e85300-9a2f-45e9-973e-0fda49a50bf1",
      "name": "Create issue",
      "type": "n8n-nodes-base.jira",
      "position": [
        1180,
        400
      ],
      "parameters": {
        "project": "10000",
        "summary": "={{$node[\"Get ticket\"].json[\"subject\"]}}",
        "issueType": "10003",
        "additionalFields": {
          "description": "=See Zendesk issue at: {{ $env.WEBHOOK_URL }}{{$node[\"Get ticket\"].json[\"id\"]}}"
        },
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "jiraSoftwareCloudApi": {
          "id": "{{ $credentials.jiraSoftwareCloudApi.id }}",
          "name": "[UPDATE ME]"
        }
      },
      "typeVersion": 1,
      "notes": "This jira node performs automated tasks as part of the workflow."
    },
    {
      "id": "85c93002-95d3-434d-b9e9-10ef714432b1",
      "name": "Update ticket",
      "type": "n8n-nodes-base.zendesk",
      "notes": "Update the Zendesk ticket by adding the Jira issue key to the \"Jira Issue Key\" field.",
      "position": [
        1360,
        400
      ],
      "parame...

Output:
The node 'Create issue' 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: 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-9f80cc3c:
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:08:01.730966",
    "updatedAt": "2025-09-29T07:08:01.730987",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "dcd5f025-9af9-4e3a-96fc-25a33dcc6c00",
      "name": "Ticket Exists",
      "type": "n8n-nodes-base.if",
      "position": [
        900,
        320
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{ $json[\"external_id\"] }}",
              "operation": "isNotEmpty"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "a5e8ec4d-bc80-4153-a677-91be2e7d02b7",
      "name": "Get user data of Ticket requester",
      "type": "n8n-nodes-base.zendesk",
      "position": [
        220,
        480
      ],
      "parameters": {
        "id": "={{ $json[\"requester_id\"] }}",
        "resource": "user",
        "operation": "get"
      },
      "credentials": {
        "zendeskApi": {
          "id": "{{ $credentials.zendeskApi.id }}",
          "name": "Zendesk account"
        }
      },
      "typeVersion": 1,
      "notes": "This zendesk node performs automated tasks as part of the workflow."
    },
    {
      "id": "6dc07af8-d446-4704-9a08-e65f89772a9b",
      "name": "Only keep needed data",
      "type": "n8n-nodes-base.set",
      "position": [
        440,
        480
      ],
      "parameters": {
        "values": {
          "number": [
            {
              "name": "id",
              "value": "={{ $json[\"id\"] }}"
            },
            {
              "name": "contactExternalId",
              "value": "={{ $json[\"external_id\"] }}"
            }
          ],
          "string": [
            {
    ...

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: 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:
{
  "name": "AI Overview Analyzer",
  "nodes": [
    {
      "parameters": {
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "typeVersion": 1.3,
      "position": [
        0,
        0
      ],
      "id": "72ac6c8d-a373-4d71-849a-75ed6716b9b1",
      "name": "When chat message received",
      "webhookId": "715bcc67-a6b6-4334-8141-83c123f35917"
    },
    {
      "parameters": {
        "contextWindowLength": 10
      },
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "typeVersion": 1.3,
      "position": [
        304,
        240
      ],
      "id": "f16346fd-e166-4d5e-973e-0db4412d20e6",
      "name": "Simple Memory"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "value": "gpt-4.1",
          "mode": "list",
          "cachedResultName": "gpt-4.1"
        },
        "options": {
          "temperature": 0
        }
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.2,
      "position": [
        144,
        240
      ],
      "id": "7887d008-b881-4387-91cb-cd824bbd553f",
      "name": "GPT-4.1",
      "credentials": {
        "openAiApi": {
          "id": "RAj3VxCHt0rIwBTk",
          "name": "OpenAI"
        }
      }
    },
    {
      "parameters": {
        "description": "Call this tool to get the AI Overview from Google.",
        "workflowId": {
          "__rl": true,
          "value": "4ViOjawp2E5PbJsu",
          "mode": "list",
          "cachedResultName": "Analyze AI Overview"
        },
        "workflowInputs": {
          "mappingMode": "defineBelow",
          "value": {
            "gl": "={{ $fromAI('country') }}",
            "q": "={{ $fromAI('query') }}",
            "location": "={{ $fromAI('location') }}",
            "hl": "={{ $fromAI('host_language') }}"
          },
          "matchingColumns": [],
          "schema": [
            {
              "id": "gl",
              "displayName": "gl",...

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.