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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-9c1b07a6",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.229744",
    "updatedAt": "2025-09-29T07:07:51.229759",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "4ea39a4f-d8c1-438f-9738-bfbb906a3d7a",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1200,
        1020
      ],
      "parameters": {
        "width": 253,
        "height": 342,
        "content": "## Send customer feedback to OpenAI for sentiment analysis"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "6962ea41-7d15-4932-919f-21ac94fa1269",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1960,
        1180
      ],
      "parameters": {
        "width": 253,
        "height": 342,
        "content": "## Add new feedback to google sheets"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "4c8a8984-2d8e-4139-866b-6f3536aced07",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        800,
        1600
      ],
      "parameters": {
        "width": 1407,
        "height": 254,
        "content": "## Instructions\n1. Connect Google sheets\n2. Connect your OpenAi account (api key + org Id)\n3. Create a customer feedback form, use an existing one or use the one below as example. \nAll set!\n\n\n- Here is the example google sheet being used in this workflow: {{ $env.WEBHOOK_URL }} You can download it to your account."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "d43a9...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-aa760025",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.225565",
    "updatedAt": "2025-09-29T07:07:51.225589",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "8b6d8462-1fe5-478b-aa15-7d10ff799aae",
      "name": "Edit Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        980,
        900
      ],
      "parameters": {
        "fields": {
          "values": [
            {
              "name": "prompt",
              "stringValue": "\"\"\"PROMPT: The above is a n8n workflow json, please create workflow documentation for the user:. you are the master of brevity, be as concise and brief as possible, output generated documentation only.      ## Guidelines for the documentation  - **Provide a detailed description**: Provide a concise and informative description outlining the template's functionality and expected outcomes. Include a brief setup guide for user convenience. A detailed description not only clarifies the template's purpose but also enhances its discoverability through SEO. It\u2019s advised to use these sections in your description:     - Who is this for?     - What problem is this workflow solving? / use case     - What this workflow does     - Setup     - How to customize this workflow to your needs   Here is an example  ``` # Who is this template for?  This workflow template is designed for **Sales** and **Customer Success** professionals seeking alerts when potential high-value users, prospects, or existing customers register for a Discourse community. Leveraging Clearbit, it retrieves enriched data for the new member to assess their value.  ### Example result in Slack  ![Screenshot 20240221 at 13.51.29.png]({{ $env.API_BASE_URL }}  # How it works  - Each time a new member is created in Discourse, the workflow runs (powered by Dis...

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

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

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

**Solutions**:

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

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

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

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

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

Add validation for empty or null input data.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "trigger-5cd75600",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "name": "Get Content Ideas",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        200,
        300
      ],
      "parameters": {
        "range": "Sheet1!A:C",
        "sheetId": "YOUR_GOOGLE_SHEET_ID"
      },
      "credentials": {
        "googleSheetsOAuth2Api": "YOUR_GOOGLE_SHEETS_CREDENTIALS"
      },
      "typeVersion": 1,
      "id": "cd912cf7-67ca-4f45-89d9-82a3ea3a3487",
      "notes": "This googleSheets node performs automated tasks as part of the workflow."
    },
    {
      "name": "Generate Post with OpenAI",
      "type": "n8n-nodes-base.openAi",
      "position": [
        500,
        300
      ],
      "parameters": {
        "model": "gpt-4",
        "prompt": "Create a social media post for {{$node[\"Get Content Ideas\"].json[\"Platform\"]}} based on this idea: {{$node[\"Get Content Ideas\"].json[\"Idea\"]}}. Keep it engaging and concise."
      },
      "credentials": {
        "openAIApi": "YOUR_OPENAI_CREDENTIALS"
      },
      "typeVersion": 1,
      "id": "9e632dde-3e1f-4551-8689-78c865affaa8",
      "notes": "This openAi node performs automated tasks as part of the workflow."
    },
    {
      "name": "Check Platform",
      "type": "n8n-nodes-base.if",
      "position": [
        800,
        300
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "{{$node[\"Get Content Ideas\"].json[\"Platform\"]}}",
              "value2": "Twitter",
              "operation": "equal"
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "be27defe-cc38-45d3-9f20-9b725c10d37d",
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "name": "Post to Twit...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-978016ca",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.243314",
    "updatedAt": "2025-09-29T07:07:51.243333",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "4ea39a4f-d8c1-438f-9738-bfbb906a3d7a",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1200,
        1020
      ],
      "parameters": {
        "width": 253,
        "height": 342,
        "content": "## Send customer feedback to OpenAI for sentiment analysis"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "6962ea41-7d15-4932-919f-21ac94fa1269",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1960,
        1180
      ],
      "parameters": {
        "width": 253,
        "height": 342,
        "content": "## Add new feedback to google sheets"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "4c8a8984-2d8e-4139-866b-6f3536aced07",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        800,
        1600
      ],
      "parameters": {
        "width": 1407,
        "height": 254,
        "content": "## Instructions\n1. Connect Google sheets\n2. Connect your OpenAi account (api key + org Id)\n3. Create a customer feedback form, use an existing one or use the one below as example. \nAll set!\n\n\n- Here is the example google sheet being used in this workflow: {{ $env.WEBHOOK_URL }} You can download it to your account."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "d43a9...

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: Expression Reference Error

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Plivo",
      "type": "n8n-nodes-base.plivo",
      "position": [
        1030,
        400
      ],
      "parameters": {
        "message": "={{ $node.NonExistentNode.json.data }}"
      },
      "credentials": {
        "plivoApi": "Plivo API Credentials"
      },
      "typeVersion": 1,
      "id": "db5476d7-841d-4336-9805-ab1860ad47ab",
      "notes": "This plivo node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        830,
        400
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "f207226a-75dc-40ab-8ee3-ef3e65b0f8c4",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        630,
        400
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "7c4a3eae-2219-4190-93ee-0421ca3e5612",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-b31b8a91",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Plivo Workflow",
  "description": "Automated workflow: Plivo Workflow. This workflow processes data and performs automated tasks.",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionT...

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

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `=Hey! The temperature outside is {{$node["OpenWeatherMap"].json["main"]["temp"]}}°C.`

**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 'Plivo' parameter 'message'.


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": "114",
  "name": "Send daily weather updates via a message in Line",
  "nodes": [
    {
      "name": "Line",
      "type": "n8n-nodes-base.line",
      "position": [
        890,
        380
      ],
      "parameters": {
        "message": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
        "additionalFields": {}
      },
      "credentials": {
        "lineNotifyOAuth2Api": "line-credentials"
      },
      "typeVersion": 1,
      "id": "77e505ec-7c0b-4bd1-a75f-17a64b90985c",
      "notes": "This line node performs automated tasks as part of the workflow."
    },
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        490,
        380
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "e2ad639a-8296-46af-89e9-30796bdd9230",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        690,
        380
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "56d88494-0cb0-4b12-b171-e415740c61de",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-d50023ca",
      "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":...

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

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

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

**Solutions**:

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

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

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

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

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

Configure appropriate timeouts and error handling for HTTP requests.


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

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

Workflow JSON:
{
  "id": "115",
  "name": "Send daily weather updates via a message using the Gotify node",
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        490,
        340
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "3643c879-8708-463e-912d-9a890e6b7175",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        690,
        340
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "ee318374-86c4-4ea3-90aa-293944e0cf94",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "Gotify",
      "type": "n8n-nodes-base.gotify",
      "position": [
        890,
        340
      ],
      "parameters": {
        "message": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
        "additionalFields": {
          "title": "Today's Weather Update"
        }
      },
      "credentials": {
        "gotifyApi": "gotify-credentials"
      },
      "typeVersion": 1,
      "id": "ab8fc9dd-3343-4d49-8d38-87ee3af3be4b",
      "notes": "This gotify node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-07b1082f",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    },
    {
      "parameters": {
        "url": "https://api.example.com/data",
        "method": "GET",
        "options": {}
  ...

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": "141",
  "name": "Send daily weather updates via a push notification using Spontit",
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        810,
        340
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "e69abf5d-b1f5-4ed2-ae25-7ca2d73318da",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        1010,
        340
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "c3ca4e47-be64-4848-9191-edd09532751e",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "Spontit",
      "type": "n8n-nodes-base.spontit",
      "position": [
        1210,
        340
      ],
      "parameters": {
        "content": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
        "additionalFields": {
          "pushTitle": "Today's Weather Update"
        }
      },
      "credentials": {
        "spontitApi": "spontit"
      },
      "typeVersion": 1,
      "id": "b78e8773-112f-464e-bf9d-9758ef8ef56d",
      "notes": "This spontit node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-62d522dc",
      "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": "w...

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

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

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

**Solutions**:

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

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

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

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

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


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: 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": "158",
  "name": "Receive the weather information of any city",
  "nodes": [
    {
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        580,
        340
      ],
      "webhookId": "45690b6a-2b01-472d-8839-5e83a74858e5",
      "parameters": {
        "path": "45690b6a-2b01-472d-8839-5e83a74858e5",
        "options": {},
        "responseData": "allEntries",
        "responseMode": "lastNode"
      },
      "typeVersion": 1,
      "id": "node-fe99167d"
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        770,
        340
      ],
      "parameters": {
        "cityName": "={{$node[\"Webhook\"].json[\"query\"][\"city\"]}}"
      },
      "credentials": {
        "openWeatherMapApi": ""
      },
      "typeVersion": 1,
      "id": "node-97d0b2c1"
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        970,
        340
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "temp",
              "value": "={{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}"
            },
            {
              "name": "description",
              "value": "={{$node[\"OpenWeatherMap\"].json[\"weather\"][0][\"description\"]}}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "node-f4097362"
    },
    {
      "id": "error-1d0ecff5",
      "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",
    "e...

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": "2",
  "name": "Telegram Weather Workflow",
  "nodes": [
    {
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        270,
        220
      ],
      "parameters": {
        "updates": [
          "message"
        ]
      },
      "credentials": {
        "telegramApi": "Telegram"
      },
      "typeVersion": 1,
      "id": "bb69d680-0d18-4473-8826-745ed2ce0734",
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        480,
        220
      ],
      "parameters": {
        "cityName": "berlin,de"
      },
      "credentials": {
        "openWeatherMapApi": "OpenWeatherMap"
      },
      "typeVersion": 1,
      "id": "8f3c8f51-ff03-49fc-9f92-e8288886f98a",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "Telegram",
      "type": "n8n-nodes-base.telegram",
      "position": [
        670,
        220
      ],
      "parameters": {
        "text": "=Right now, we have {{$node[\"OpenWeatherMap\"].json[\"weather\"][0][\"description\"]}}. The temperature is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C but it really feels like {{$node[\"OpenWeatherMap\"].json[\"main\"][\"feels_like\"]}}\u00b0C \ud83d\ude42",
        "chatId": "={{$node[\"Telegram Trigger\"].json[\"message\"][\"chat\"][\"id\"]}}",
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": "Telegram"
      },
      "typeVersion": 1,
      "id": "1fb4a176-0931-4bab-92c7-e11b5314ae46",
      "notes": "This telegram node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-b3c23c57",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "param...

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": "69",
  "name": "Creating your first workflow",
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        240,
        250
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {}
          ]
        }
      },
      "typeVersion": 1,
      "id": "20a5d2ea-f5f4-4439-9dd1-e4a25af622fe",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        450,
        250
      ],
      "parameters": {
        "cityName": "berlin,de"
      },
      "credentials": {
        "openWeatherMapApi": "Weather"
      },
      "typeVersion": 1,
      "id": "ffad66d6-558a-4757-b84b-7d79166d9343",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        650,
        250
      ],
      "parameters": {
        "conditions": {
          "number": [
            {
              "value1": "={{$node[\"OpenWeatherMap\"].json[\"main\"][\"feels_like\"]}}",
              "value2": 18
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "2de0ffac-3638-47d4-9c00-a99f258e91bd",
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "name": "Twilio",
      "type": "n8n-nodes-base.twilio",
      "position": [
        850,
        150
      ],
      "parameters": {
        "to": "",
        "from": "",
        "message": "=Wear a sweater today, it is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"feels_like\"]}}\u00b0C outside right now."
      },
      "credentials": {
        "twilioApi": "Twilio"
      },
      "typeVersion": 1,
      "id": "ba02f450-8090-4634-990a-052b00458556",
      "notes": "This twilio 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: Data Type Mismatch

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        870,
        300
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "tempC",
              "value": "={{$json[\"main\"][\"temp\"]}}"
            },
            {
              "name": "humidity",
              "value": "={{$json[\"main\"][\"humidity\"]}}"
            },
            {
              "name": "windspeed",
              "value": "={{$json[\"wind\"][\"speed\"]}}"
            },
            {
              "name": "description",
              "value": "={{$json[\"weather\"][0][\"description\"]}}"
            },
            {
              "name": "city",
              "value": "={{$json[\"name\"]}}, {{$json[\"sys\"][\"country\"]}}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "node-1240c069"
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        650,
        300
      ],
      "parameters": {
        "cityName": "={{$json[\"body\"][\"city\"]}}",
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "openWeatherMapApi": "open-weather-map"
      },
      "typeVersion": 1,
      "id": "node-e40937d8"
    },
    {
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        450,
        300
      ],
      "webhookId": "39f1b81f-f538-4b94-8788-29180d5e4016",
      "parameters": {
        "path": "39f1b81f-f538-4b94-8788-29180d5e4016",
        "options": {},
        "responseData": "allEntries",
        "responseMode": "lastNode"
      },
      "typeVersion": 1,
      "id": "node-86d89089"
    },
    {
      "id": "error-96210401",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
 ...

Output:
The node 'OpenWeatherMap' 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 'OpenWeatherMap'.


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:
{
  "nodes": [
    {
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        450,
        300
      ],
      "webhookId": "39f1b81f-f538-4b94-8788-29180d5e4016",
      "parameters": {
        "path": "39f1b81f-f538-4b94-8788-29180d5e4016",
        "options": {
          "rawBody": true
        },
        "httpMethod": "POST",
        "authentication": "{{ $credentials.headerAuth }}"
      },
      "credentials": {
        "httpHeaderAuth": "Webhook Workflow Credentials"
      },
      "typeVersion": 1,
      "id": "node-9b9413c6"
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        650,
        300
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "Name",
              "value": "={{$json[\"body\"][\"name\"]}}"
            },
            {
              "name": "Number",
              "value": "={{$json[\"body\"][\"number\"]}}"
            },
            {
              "name": "City",
              "value": "={{$json[\"body\"][\"city\"]}}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "node-c561764f"
    },
    {
      "name": "Airtable",
      "type": "n8n-nodes-base.airtable",
      "position": [
        850,
        300
      ],
      "parameters": {
        "table": "Table 1",
        "options": {},
        "operation": "append"
      },
      "credentials": {
        "airtableApi": "Airtable Credentials n8n"
      },
      "typeVersion": 1,
      "id": "node-3390f736"
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        1050,
        300
      ],
      "parameters": {
        "cityName": "={{$node[\"Webhook\"].json[\"body\"][\"city\"]}}"
      },
      "credentials": {
        "openWeatherMapApi": "open-weather-map"
      },
      "typeVersion": 1,
      "id": "node-f5360...

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: 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" "82",
  "name": "Send daily weather updates via a push notification using the Pushcut node",
  "nodes": [
    {
      "name": "Pushcut",
      "type": "n8n-nodes-base.pushcut",
      "position": [
        1050,
        420
      ],
      "parameters": {
        "additionalFields": {
          "text": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
          "title": "Today's Weather Update"
        },
        "notificationName": "n8n"
      },
      "credentials": {
        "pushcutApi": "Pushcut Credentials"
      },
      "typeVersion": 1,
      "id": "3002e1e9-1d13-4c36-a81c-615f7e9f85a2",
      "notes": "This pushcut node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        850,
        420
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "open-weather-map"
      },
      "typeVersion": 1,
      "id": "7f0acee2-c1eb-46ed-b393-5bb68bed129e",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        650,
        420
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "990eba52-50ef-41fc-a08e-ec0575d6754e",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-01021ef9",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "...

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: 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": "84",
  "name": "Send daily weather updates to a phone number using the Vonage node",
  "nodes": [
    {
      "name": "Vonage",
      "type": "n8n-nodes-base.vonage",
      "position": [
        770,
        260
      ],
      "parameters": {
        "to": "1234",
        "from": "Vonage APIs",
        "message": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
        "additionalFields": {}
      },
      "typeVersion": 1,
      "id": "d3d1f5f4-f04e-4f33-ad82-c72441ee838d",
      "notes": "This vonage node performs automated tasks as part of the workflow."
    },
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        370,
        260
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "3cb65e38-f109-4d66-8bd6-0b9bdae9571c",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        570,
        260
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "4dd699b7-251b-47b5-a3dd-a5a8bbea5168",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-7831b27b",
      "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"...

Output:
The node 'Vonage' (type: n8n-nodes-base.vonage) 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": {
  "vonageApi": "vonage"
}
```

**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 'Vonage' node.


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": "91",
  "name": "Send daily weather updates via a push notification",
  "nodes": [
    {
      "name": "Pushover",
      "type": "n8n-nodes-base.pushover",
      "position": [
        970,
        300
      ],
      "parameters": {
        "message": "=Hey! The temperature outside is {{$node[\"OpenWeatherMap\"].json[\"main\"][\"temp\"]}}\u00b0C.",
        "userKey": "",
        "priority": 0,
        "additionalFields": {
          "title": "Today's Weather"
        }
      },
      "credentials": {
        "pushoverApi": "pushover"
      },
      "typeVersion": 1,
      "id": "cdfc6629-9052-4582-8716-0deebce0f8c5",
      "notes": "This pushover node performs automated tasks as part of the workflow."
    },
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        570,
        300
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 9
            }
          ]
        }
      },
      "typeVersion": 1,
      "id": "18e81565-ae25-41ad-8443-42ffbbfec527",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        770,
        300
      ],
      "parameters": {
        "cityName": "berlin"
      },
      "credentials": {
        "openWeatherMapApi": "owm"
      },
      "typeVersion": 1,
      "id": "b00609ed-d2a1-41bd-b8d4-ee5c049df15d",
      "notes": "This openWeatherMap node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-343bf29a",
      "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,...

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:
{
  "nodes": [
    {
      "name": "OpenWeatherMap",
      "type": "n8n-nodes-base.openWeatherMap",
      "position": [
        900,
        300
      ],
      "parameters": {
        "cityName": "={{ $json[\"city\"] }}",
        "language": "en"
      },
      "credentials": {
        "openWeatherMapApi": ""
      },
      "typeVersion": 1,
      "id": "node-7c448969"
    },
    {
      "name": "Webhook GET",
      "type": "n8n-nodes-base.webhook",
      "position": [
        500,
        300
      ],
      "webhookId": "a31f0bbd-a583-470e-9a1e-29a9ce778122",
      "parameters": {
        "path": "weather",
        "options": {
          "responsePropertyName": "data"
        },
        "responseMode": "lastNode"
      },
      "typeVersion": 1,
      "id": "node-0e171a15"
    },
    {
      "name": "Set City",
      "type": "n8n-nodes-base.set",
      "position": [
        700,
        300
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "city",
              "value": "={{ $json[\"query\"][\"parameter\"] || 'berlin,de' }}"
            }
          ]
        },
        "options": {}
      },
      "typeVersion": 1,
      "id": "node-41934a69"
    },
    {
      "name": "Create Response",
      "type": "n8n-nodes-base.set",
      "position": [
        1100,
        300
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "data",
              "value": "=It has {{$json[\"main\"][\"temp\"]}}\\xE2\\x84\\x83  and feels like {{$json[\"main\"][\"feels_like\"]}}\\xE2\\x84\\x83  in {{$json[\"name\"]}}"
            }
          ]
        },
        "options": {}
      },
      "typeVersion": 1,
      "id": "node-21418c36"
    },
    {
      "id": "error-9648c543",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workf...

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:
{
  "id": "46",
  "name": "Receive updates when a billing plan is activated in PayPal",
  "nodes": [
    {
      "name": "PayPal Trigger",
      "type": "n8n-nodes-base.payPalTrigger",
      "position": [
        1130,
        620
      ],
      "webhookId": "242a300e-b5a0-45a2-87bc-40def6fe56ef",
      "parameters": {
        "events": [
          "BILLING.PLAN.ACTIVATED"
        ]
      },
      "typeVersion": 1,
      "id": "2fad9cd4-fc44-4bac-9ebb-9b66540e3605",
      "notes": "This payPalTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-14b453ae",
      "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 billing plan is activated in PayPal. This workflow processes data and performs automated tasks.",
  "meta": {
    "instanceId": "workflow-2e6ae2ec",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.307837",
    "updatedAt": "2025-09-29T07:07:51.307857",
    "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 billing plan is activated in PayPal. This workflow has been optimized for production use with comprehensive error handling, sec...

Output:
The node 'PayPal Trigger' (type: n8n-nodes-base.payPalTrigger) 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": {
  "payPalApi": "paypal"
}
```

**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 'PayPal Trigger' 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" "115",
  "name": "Receive updates for all changes in Pipedrive",
  "nodes": [
    {
      "name": "Pipedrive Trigger",
      "type": "n8n-nodes-base.pipedriveTrigger",
      "position": [
        750,
        250
      ],
      "parameters": {},
      "credentials": {
        "pipedriveApi": ""
      },
      "typeVersion": 1,
      "id": "96b222cf-2cd0-4b82-8e6f-1a274b378ad0",
      "notes": "This pipedriveTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-75eabd78",
      "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 for all changes in Pipedrive. This workflow processes data and performs automated tasks.",
  "meta": {
    "instanceId": "workflow-0083bbb8",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.303939",
    "updatedAt": "2025-09-29T07:07:51.303952",
    "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 for all changes in Pipedrive. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."
}...

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "list people",
      "type": "n8n-nodes-base.itemLists",
      "position": [
        820,
        240
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "={{ $env.UNDEFINED_ENV_VAR }}"
      },
      "typeVersion": 1,
      "id": "node-5d39e1b4"
    },
    {
      "name": "Pipedrive - Enrich Organization",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        1060,
        740
      ],
      "parameters": {
        "resource": "organization",
        "operation": "update",
        "updateFields": {
          "customProperties": {
            "property": [
              {
                "name": "Total Funding Amount",
                "value": "={{$json[\"company\"][\"full\"][\"cards\"][\"fundingRoundsSummary\"][\"fundingTotal\"][\"valueUsdRoundup\"]}}"
              },
              {
                "name": "Website Traffic",
                "value": "={{$json[\"company\"][\"full\"][\"cards\"][\"trafficRankHeadline\"][\"visitsLastestMonthPrettier\"]}}"
              },
              {
                "name": "Industry",
                "value": "={{$json[\"company\"][\"premium\"][\"industries\"]}}"
              },
              {
                "name": "Linkedin URL",
                "value": "={{$json[\"company\"][\"full\"][\"cards\"][\"overviewFields2\"][\"linkedin\"][\"value\"]}}"
              },
              {
                "name": "=Website",
                "value": "={{$json[\"company\"][\"premium\"][\"website\"]}}"
              },
              {
                "name": "Number of Employees",
                "value": "={{$json[\"company\"][\"premium\"][\"companySize\"]}}"
              },
              {
                "name": "Address",
                "value": "={{$json[\"company\"][\"premium\"][\"headquaterAddr\"]}}"
              }
            ]
          }
        },
        "organizationId": "={{$node[\"Pipedrive Trigger - New Company Created\"].json[\"meta\"][\"i...

Output:
In node 'list people', the parameter 'fieldToSplitOut' contains an expression that references undefined data.

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

**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 'list people' parameter 'fieldToSplitOut'.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-679d078b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.311875",
    "updatedAt": "2025-09-29T07:07:51.312322",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "97b052c3-2a98-4dee-973a-f170a5e575c8",
      "name": "Google Drive Trigger",
      "type": "n8n-nodes-base.googleDriveTrigger",
      "position": [
        960,
        140
      ],
      "parameters": {
        "event": "fileCreated",
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "triggerOn": "specificFolder",
        "folderToWatch": "1uQ0YnGnQNzIaWGdTt2UBT58tTy8xDlpW"
      },
      "typeVersion": 1,
      "notes": "This googleDriveTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1e82f8f8-175d-4493-a3a9-35380431d91c",
      "name": "Google Drive",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        1180,
        140
      ],
      "parameters": {
        "fileId": "={{ $json[\"id\"] }}",
        "options": {},
        "operation": "download"
      },
      "credentials": {
        "googleDriveOAuth2Api": {
          "id": "{{ $credentials.googleDriveOAuth2Api.id }}",
          "name": "Hilary's Google Drive account"
        }
      },
      "typeVersion": 2,
      "notes": "This googleDrive node performs automated tasks as part of the workflow."
    },
    {
      "id": "fb36224d-4acb-4aba-9543-dd534e76477f",
      "name": "Spreadsheet File",
      "type": "n8n-nodes-base.spreadsheetFile",
      "position": [
        1400,
        140
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1,
      "notes": "This spreadsheetFile node performs automated tasks as part of the workflow."
    },
    {
      "...

Output:
The node 'Google Drive Trigger' (type: n8n-nodes-base.googleDriveTrigger) 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": {
  "googleDriveOAuth2Api": {
    "id": "{{ $credentials.googleDriveOAuth2Api.id }}",
    "name": "Hilary's Google Drive account"
  }
}
```

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

Add credentials configuration to the 'Google Drive Trigger' node.


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

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

Workflow JSON:
{
  "id": "17j2efAe10uXRc4p",
  "meta": {
    "instanceId": "workflow-9e4dd749",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.342092",
    "updatedAt": "2025-09-29T07:07:51.342106",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Auto WordPress Blog Generator (GPT + Postgres + WP Media)",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f71a8a34-5d88-48b0-bf56-44c95d970abd",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -1120,
        -560
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "hours",
              "triggerAtMinute": {}
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "8ce11fcd-806c-44ea-aa5f-015599eacc98",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        2060,
        -20
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1-2025-04-14",
          "cachedResultName": "gpt-4.1-2025-04-14"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "BSiASwH9CasrT3uK",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "c9450a63-a89e-46eb-b083-b0f40d7b797c",
      "name": "Download Image",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2620,
        100
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options":...

Output:
The node '10 latest headlines' (type: n8n-nodes-base.postgres) 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": {
  "postgres": {
    "id": "JKCOXnEh1Bqg4Gad",
    "name": "YOUR_POSTGRES_CREDENTIAL"
  }
}
```

**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 '10 latest headlines' node.


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:
{
  "nodes": [
    {
      "id": "d44489b8-8cb7-4776-8c16-a8bb01e52171",
      "name": "OpenAI1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        300,
        -300
      ],
      "parameters": {
        "text": "={{ \n     JSON.parse($('Insert Transcription Part').item.json.dialog)\n        .filter(item => item.date_updated && new Date(item.date_updated) >= new Date($('Insert Transcription Part').item.json.date_updated))\n        .sort((a, b) => a.order - b.order)\n        .map(item => `${item.words}\\n${item.speaker}`)\n        .join('\\n\\n')\n}}",
        "memory": "threadId",
        "prompt": "define",
        "options": {},
        "resource": "assistant",
        "threadId": "={{ $json.thread_id }}",
        "assistantId": {
          "__rl": true,
          "mode": "list",
          "value": "asst_D5t6bNnNpenmfC7PmvywMqyR",
          "cachedResultName": "5minAI - Realtime Agent"
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "SphXAX7rlwRLkiox",
          "name": "Test club key"
        }
      },
      "typeVersion": 1.6,
      "notes": "This openAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "3425f1c1-ad68-495e-bb9a-95ea92e7cf23",
      "name": "Insert Transcription Part",
      "type": "n8n-nodes-base.postgres",
      "position": [
        -120,
        -300
      ],
      "parameters": {
        "query": "UPDATE public.data\nSET output = jsonb_set(\n    output,\n    '{dialog}', \n    (\n        COALESCE(\n            (output->'dialog')::jsonb, \n            '[]'::jsonb  -- Initialize as empty array if dialog does not exist\n        ) || jsonb_build_object(\n            'order', (COALESCE(jsonb_array_length(output->'dialog'), 0) + 1),  -- Calculate the next order\n            'words', '{{ $('Webhook2').item.json.body.data.transcript.words.map(word => word.text.replace(/'/g, \"''\")).join(\" \") }}',\n            'speaker', '{{ $('Webhook2').item.json.body.data.transcrip...

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": "7gRbzEzCuOzQKn4M:
  "meta": {
    "instanceId": "workflow-82537033",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.329386",
    "updatedAt": "2025-09-29T07:07:51.329401",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "SHEETS RAG",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "a073154f-53ad-45e2-9937-d0a4196c7838",
      "name": "create table query",
      "type": "n8n-nodes-base.code",
      "position": [
        1280,
        2360
      ],
      "parameters": {
        "jsCode": "// Helper function to check if a string is in MM/DD/YYYY format\nfunction isDateString(value) {\n  const dateRegex = /^\\d{2}\\/\\d{2}\\/\\d{4}$/;\n  if (typeof value !== 'string') return false;\n  if (!dateRegex.test(value)) return false;\n  const [month, day, year] = value.split('/').map(Number);\n  const date = new Date(year, month - 1, day);\n  return !isNaN(date.getTime());\n}\n\nconst tableName = `ai_table_${$('change_this').first().json.sheet_name}`;\nconst rows = $('fetch sheet data').all();\nconst allColumns = new Set();\n\n// Collect column names dynamically\nrows.forEach(row => {\n  Object.keys(row.json).forEach(col => allColumns.add(col));\n});\n\n// Ensure \"ai_table_identifier\" is always the first column\nconst originalColumns = [\"ai_table_identifier\", ...Array.from(allColumns)];\n\n// Function to detect currency type (unchanged)\nfunction detectCurrency(values) {\n  const currencySymbols = {\n    '\u20b9': 'INR', '$': 'USD', '\u20ac': 'EUR', '\u00a3': 'GBP', '\u00a5': 'JPY',\n    '\u20a9': 'KRW', '\u0e3f': 'THB', 'z\u0142': 'PLN', 'kr': 'SEK', 'R$': 'BRL',\n    'C$': 'CAD', 'A$': 'AUD'\n  };\n\n  let detectedCurrency = null;\n  for (const value of values) {\n    if (typeof value === 'string' && value.trim() !== '') {\n      for (con...

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: 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": "AC4paL1SXMFURgmc",
  "meta": {
    "instanceId": "workflow-df722e0b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.394267",
    "updatedAt": "2025-09-29T07:07:51.394281",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Translate questions about e-mails into SQL queries and run them",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "dd63600a-6bee-43cd-a1d2-87aae2089ed4",
      "name": "Add table name to output",
      "type": "n8n-nodes-base.set",
      "position": [
        840,
        160
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "764176d6-3c89-404d-9c71-301e8a406a68",
              "name": "table",
              "type": "string",
              "value": "={{ $('List all tables in a database').item.json.table_name ?? 'emails_metadata'}}"
            }
          ]
        },
        "includeOtherFields": true
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "1bf02b6d-e8e4-4b1b-8ee2-c91a8c390a21",
      "name": "Convert data to binary",
      "type": "n8n-nodes-base.convertToFile",
      "position": [
        1040,
        160
      ],
      "parameters": {
        "options": {},
        "operation": "toJson"
      },
      "typeVersion": 1.1,
      "notes": "This convertToFile node performs automated tasks as part of the workflow."
    },
    {
      "id": "cf930fa2-03bd-46fa-af4d-df282262f965",
      "name": "Save file locally",
      "type": "n8n-nodes-base.readWriteFile",
      "position": [
        1220,
        160
      ],
      "parameters": {
        "options": {},
        "fileName": "=/files/pgsql-{{ $workflow.id }}.json",
        "o...

Output:
The node 'Extract data from file' 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 'Extract data from file'.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "d44489b8-8cb7-4776-8c16-a8bb01e52171",
      "name": "OpenAI1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        300,
        -300
      ],
      "parameters": {
        "text": "={{ \n JSON.parse($('Insert Transcription Part').item.json.dialog)\n .filter(item => item.date_updated && new Date(item.date_updated) >= new Date($('Insert Transcription Part').item.json.date_updated))\n .sort((a, b) => a.order - b.order)\n .map(item => `${item.words}\\n${item.speaker}`)\n .join('\\n\\n')\n}}",
        "memory": "threadId",
        "prompt": "define",
        "options": {},
        "resource": "assistant",
        "threadId": "={{ $json.thread_id }}",
        "assistantId": {
          "__rl": true,
          "mode": "list",
          "value": "asst_D5t6bNnNpenmfC7PmvywMqyR",
          "cachedResultName": "5minAI - Realtime Agent"
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "SphXAX7rlwRLkiox",
          "name": "Test club key"
        }
      },
      "typeVersion": 1.6,
      "notes": "This openAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "3425f1c1-ad68-495e-bb9a-95ea92e7cf23",
      "name": "Insert Transcription Part",
      "type": "n8n-nodes-base.postgres",
      "position": [
        -120,
        -300
      ],
      "parameters": {
        "query": "UPDATE public.data\nSET output = jsonb_set(\n output,\n '{dialog}', \n (\n COALESCE(\n (output->'dialog')::jsonb, \n '[]'::jsonb -- Initialize as empty array if dialog does not exist\n ) || jsonb_build_object(\n 'order', (COALESCE(jsonb_array_length(output->'dialog'), 0) + 1), -- Calculate the next order\n 'words', '{{ $('Webhook2').item.json.body.data.transcript.words.map(word => word.text.replace(/'/g, \"''\")).join(\" \") }}',\n 'speaker', '{{ $('Webhook2').item.json.body.data.transcript.speaker }}',\n 'language', '{{ $('Webhook2').item.json.body.data.transcript.language }}',\n 'speaker_id', ('{{...

Output:
The node 'Sticky Note9' 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 Note9'.


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": "Zrd98BnbmN1Px9an",
  "meta": {
    "instanceId": "workflow-6f7027ae",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.429010",
    "updatedAt": "2025-09-29T07:07:51.429020",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Youtube Searcher",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5cb8757a-d8f0-49fa-803d-7f04b514f9f8",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        80,
        220
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "28964bd5-dc53-4dfa-bbb1-4eb80b952063",
      "name": "find_video_data1",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1440,
        320
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "key",
              "value": "={{ $env[\"GOOGLE_API_KEY\"] }}"
            },
            {
              "name": "id",
              "value": "={{ $json.id.videoId }}"
            },
            {
              "name": "part",
              "value": "contentDetails, statistics"
            }
          ]
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "5e8b9441-4b91-4460-a9ac-4a0a02aa57ad",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "disabled": true,
      "position": [
        -180,
        220
      ],
      "parameters": {},
      "typeVersi...

Output:
The node 'fetch_last_registered' (type: n8n-nodes-base.postgres) 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": {
  "postgres": {
    "id": "KQiQIZTArTBSNJH7",
    "name": "Postgres account"
  }
}
```

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

Add credentials configuration to the 'fetch_last_registered' node.


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

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

Workflow JSON:
{
  "id": "xQHiKDTkezDY5lFu",
  "meta": {
    "instanceId": "workflow-65a7b221",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.441235",
    "updatedAt": "2025-09-29T07:07:51.441301",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Suspicious_login_detection",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "a95e464a-7451-4737-9db8-993a6568595b",
      "name": "Extract relevant data",
      "type": "n8n-nodes-base.set",
      "position": [
        -260,
        700
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "ip",
              "value": "={{ $json.body.context.ip }}"
            },
            {
              "name": "userAgent",
              "value": "={{ $json.body.context.userAgent }}"
            },
            {
              "name": "timestamp",
              "value": "={{ $json.body.originalTimestamp }}"
            },
            {
              "name": "url",
              "value": "={{ $json.body.context.page.url }}"
            },
            {
              "name": "userId",
              "value": "={{ $json.body.userId }}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 2,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "d7dea680-14f3-4ffd-bfaf-f928b69d801d",
      "name": "New /login event",
      "type": "n8n-nodes-base.webhook",
      "disabled": true,
      "position": [
        -740,
        700
      ],
      "webhookId": "705ca4c4-0a38-4ef8-9de9-abc8b3686dc6",
      "parameters": {
        "path": "705ca4c4-0a38-4ef8-9de9-abc8b3686dc6",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 1,
      "notes...

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

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

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "httpHeaderAuth": {
    "id": "wwwfQfxzoBK7NH2a",
    "name": "n8n greynoise api key"
  }
}
```

**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 'GreyNoise' node.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-4ff9f2b8",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.442049",
    "updatedAt": "2025-09-29T07:07:51.442072",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "trigger-54db0dfd",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "id": "d08a2559-17fd-4bdb-a976-795c3823a88a",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -520,
        240
      ],
      "parameters": {
        "content": "## Try me out\nClick the 'chat' button at the bottom of the canvas and paste in:\n\n_Which tables are available?_"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "3019b559-6100-4ead-8e1a-a7dece2a6982",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -380,
        -60
      ],
      "parameters": {
        "color": 7,
        "width": 677,
        "height": 505,
        "content": "This workflow uses a Postgres DB, but you could swap it for a MySQL or SQLite one"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "73786411-5383-4921-82ee-06b3b582bab7",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -320,
        40
      ],
      "webhookId": "1c0d08f0-abd0-4bdc-beef-370c27aae1a0",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "e65a1558...

Output:
The node 'Postgres' (type: n8n-nodes-base.postgresTool) 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": {
  "postgres": {
    "id": "elRn5sxKOfCdlEs6",
    "name": "Postgres account"
  }
}
```

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

Add credentials configuration to the 'Postgres' node.


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:
{
  "nodes": [
    {
      "id": "trigger-f69d8003",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "id": "0a4e65b7-39be-44eb-8c66-913ebfe8a87a",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1140,
        840
      ],
      "parameters": {
        "color": 3,
        "width": 215,
        "height": 80,
        "content": "**Replace password and username for Supabase**"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "2cea21fc-f3fe-47b7-a7b6-12acb0bc03ac",
      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -160,
        320
      ],
      "parameters": {
        "color": 7,
        "width": 280.2462120317618,
        "height": 545.9087885077763,
        "content": "### Set up steps\n\n#### Preparation\n1. **Create Accounts**:\n   - [N8N]({{ $env.WEBHOOK_URL }} For workflow automation.\n   - [Supabase]({{ $env.WEBHOOK_URL }} For database hosting and management.\n   - [OpenAI]({{ $env.WEBHOOK_URL }} For building the conversational AI agent.\n2. **Configure Database Connection**:\n   - Set up a PostgreSQL database in Supabase.\n   - Use appropriate credentials (`username`, `password`, `host`, and `database` name) in your workflow.\n\n#### N8N Workflow\n\nAI agent with tools:\n\n1. **Code Tool**:\n   - Execute SQL queries based on user input.\n2. **Database Schema Tool**:\n   - Retrieve a list of all tables in the database.\n   - Use a predefined SQL query to fetch table definitions, including column names, types, and references.\n3. **Table Definition**:\n   - Retrieve a list of columns with types for one table."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the ...

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: 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-c9a13a2b",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "id": "0a4e65b7-39be-44eb-8c66-913ebfe8a87a",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1140,
        840
      ],
      "parameters": {
        "color": 3,
        "width": 215,
        "height": 80,
        "content": "**Replace password and username for Supabase**"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "2cea21fc-f3fe-47b7-a7b6-12acb0bc03ac",
      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -160,
        320
      ],
      "parameters": {
        "color": 7,
        "width": 280.2462120317618,
        "height": 545.9087885077763,
        "content": "### Set up steps\n\n#### Preparation\n1. **Create Accounts**:\n - [N8N]({{ $env.WEBHOOK_URL }} For workflow automation.\n - [Supabase]({{ $env.WEBHOOK_URL }} For database hosting and management.\n - [OpenAI]({{ $env.WEBHOOK_URL }} For building the conversational AI agent.\n2. **Configure Database Connection**:\n - Set up a PostgreSQL database in Supabase.\n - Use appropriate credentials (`username`, `password`, `host`, and `database` name) in your workflow.\n\n#### N8N Workflow\n\nAI agent with tools:\n\n1. **Code Tool**:\n - Execute SQL queries based on user input.\n2. **Database Schema Tool**:\n - Retrieve a list of all tables in the database.\n - Use a predefined SQL query to fetch table definitions, including column names, types, and references.\n3. **Table Definition**:\n - Retrieve a list of columns with types for one table."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
...

Output:
The node 'DB Schema' (type: n8n-nodes-base.postgresTool) 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": {
  "postgres": {
    "id": "AO9cER6p8uX7V07T",
    "name": "Postgres 5minai"
  }
}
```

**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 'DB Schema' 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:
{
  "nodes": [
    {
      "name": "PostHog:
      "type": "n8n-nodes-base.postHog",
      "position": [
        640,
        280
      ],
      "parameters": {
        "eventName": "={{$json[\"query\"][\"event\"]}}",
        "distinctId": "n8n",
        "additionalFields": {}
      },
      "credentials": {
        "postHogApi": "PostHog Credentials"
      },
      "typeVersion": 1,
      "id": "node-c999c01a"
    },
    {
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        440,
        280
      ],
      "webhookId": "f6d0071e-3cf9-49fd-8bbd-afdbea6b0c67",
      "parameters": {
        "path": "f6d0071e-3cf9-49fd-8bbd-afdbea6b0c67",
        "options": {}
      },
      "typeVersion": 1,
      "id": "node-c93d0470"
    },
    {
      "id": "error-383539bb",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Production Workflow",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3
  },
  "meta": {
    "instanceId": "workflow-33eb36a2",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.509823",
    "updatedAt": "2025-09-29T07:07:51.509835",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "description": "Production-ready workflow: Production Workflow. This workflow has been optimized for production use with comprehensive error handling, s...

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


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": "48"
  "name": "Receive updates when an email is bounced or opened",
  "nodes": [
    {
      "name": "Postmark Trigger",
      "type": "n8n-nodes-base.postmarkTrigger",
      "position": [
        690,
        260
      ],
      "webhookId": "1422ac7a-62ba-4f7c-8e22-4e8ecb4950ce",
      "parameters": {
        "events": [
          "bounce",
          "open"
        ],
        "includeContent": true
      },
      "credentials": {
        "postmarkApi": "postmark"
      },
      "typeVersion": 1,
      "id": "a7371d75-4da7-44aa-b1a4-e2057e7a35f9",
      "notes": "This postmarkTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-d96e8088",
      "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 an email is bounced or opened. This workflow processes data and performs automated tasks.",
  "meta": {
    "instanceId": "workflow-aea17bf0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.481477",
    "updatedAt": "2025-09-29T07:07:51.481494",
    "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 an email is bounced or opened. This workf...

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.