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": "bae5d407-9210-4bd0-99a3-3637ee893065",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -1440,
        -280
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "c5a14c8e-4aeb-4a4e-b202-f88e837b6efb",
      "name": "Get Variables",
      "type": "n8n-nodes-base.set",
      "position": [
        -200,
        -180
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "b455afe0-2311-4d3f-8751-269624d76cf1",
              "name": "coords",
              "type": "array",
              "value": "={{ $json.candidates[0].content.parts[0].text.parseJson() }}"
            },
            {
              "id": "92f09465-9a0b-443c-aa72-6d208e4df39c",
              "name": "width",
              "type": "string",
              "value": "={{ $('Get Image Info').item.json.size.width }}"
            },
            {
              "id": "da98ce2a-4600-46a6-b4cb-159ea515cb50",
              "name": "height",
              "type": "string",
              "value": "={{ $('Get Image Info').item.json.size.height }}"
            }
          ]
        }
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "f24017c9-05bc-4f75-a18c-29efe99bfe0e",
      "name": "Get Test Image",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -1260,
        -280
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
        "options": {}
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "c0f6a9f7-ba65-48a3-8752-ce5d80fe33cf",
      "name": "Gemini 2.0 Object Detection",...

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: 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-27cccca4",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.712826",
    "updatedAt": "2025-09-29T07:07:42.714306",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "42cc4260-626e-4f83-b1c3-c78c99b78b38",
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        1780,
        520
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "f21386ff-f8db-4f5d-a44c-15484d1e4ab7",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1340,
        900
      ],
      "parameters": {
        "color": 6,
        "width": 2086.845881354743,
        "height": 750.8363163824032,
        "content": "## Subworkflow"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "82851e4a-33a1-461b-965f-f51efcb5af90",
      "name": "n8n",
      "type": "n8n-nodes-base.n8n",
      "position": [
        2040,
        620
      ],
      "parameters": {
        "filters": {},
        "requestOptions": {}
      },
      "credentials": {
        "n8nApi": {
          "id": "1SDBLwjifPzb02W8",
          "name": "n8n account"
        }
      },
      "typeVersion": 1,
      "notes": "This n8n node performs automated tasks as part of the workflow."
    },
    {
      "id": "90cac8e2-9509-4d48-9038-bb653ffbdf9d",
      "name": "Return",
      "type": "n8n-nodes-base.set",
      "position": [
        3220,
        1100
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "8d513345-6484-431f-afb7-7cf045c90f4f",
    ...

Output:
The node 'Edit existing file' (type: n8n-nodes-base.github) 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": {
  "githubApi": {
    "id": "3mfzXcMjoqNHsujs",
    "name": "GitHub 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 'Edit existing file' node.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "9df72ef9-3b9d-40e4-9cb5-a5ada153c0bb",
      "name": "Google Drive",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        120,
        -180
      ],
      "parameters": {
        "fileId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $json.id }}"
        },
        "options": {},
        "operation": "download"
      },
      "credentials": {
        "googleDriveOAuth2Api": {
          "id": "wpiZXesxk9S8fkVG",
          "name": "Google Drive account 2"
        }
      },
      "typeVersion": 3,
      "notes": "This googleDrive node performs automated tasks as part of the workflow."
    },
    {
      "id": "e21bb906-658c-4a52-9c7b-b77d6e0e7ea5",
      "name": "Upload File",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        360,
        -180
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "multipart-form-data",
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "webhook_url",
              "value": "{{ $env.WEBHOOK_URL }}"
            },
            {
              "name": "file",
              "parameterType": "formBinaryData",
              "inputDataFieldName": "data"
            },
            {
              "name": "disable_ocr",
              "value": "true"
            },
            {
              "name": "disable_image_extraction",
              "value": "True"
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "accept",
              "value": "application/json"
            },
            {
              "name": "Authorization",
              "value": "Bearer "
            },
            {
              "name": "parsing_instruction",
              "value": "Please extract invoice line item...

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

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

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

**Solutions**:

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

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

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

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

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

Configure appropriate timeouts and error handling for HTTP requests.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-e354d374"
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.745020",
    "updatedAt": "2025-09-29T07:07:42.745039",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "1bad6bfc-9ec9-48a5-b8f7-73c4de3d08cf",
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "position": [
        1480,
        160
      ],
      "parameters": {
        "simple": false,
        "filters": {},
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "kkhNhqKpZt6IUZd0",
          "name": " Gmail"
        }
      },
      "typeVersion": 1.2,
      "notes": "This gmailTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "9ac747a1-4fd8-46ba-b4c1-75fd17aab2ed",
      "name": "Microsoft Outlook Trigger",
      "type": "n8n-nodes-base.microsoftOutlookTrigger",
      "disabled": true,
      "position": [
        1480,
        720
      ],
      "parameters": {
        "fields": [
          "body",
          "toRecipients",
          "subject",
          "bodyPreview"
        ],
        "output": "fields",
        "filters": {},
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "credentials": {
        "microsoftOutlookOAuth2Api": {
          "id": "vTCK0oVQ0WjFrI5H",
          "name": " Outlook Credential"
        }
      },
      "typeVersion": 1,
      "notes": "This microsoftOutlookTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "5bf9b0e8-b84e-44a2-aad2-45dde3e4ab1b",
      "name": "Screenshot HTML",
      "typ...

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

Add the missing comma between object properties.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: 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-a97073fc",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.706868",
    "updatedAt": "2025-09-29T07:07:42.706886",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "94dd7f48-0013-4fb5-89c4-826ecd7f2d66",
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "position": [
        1460,
        120
      ],
      "parameters": {
        "simple": false,
        "filters": {},
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "kkhNhqKpZt6IUZd0",
          "name": "Gmail"
        }
      },
      "typeVersion": 1.2,
      "notes": "This gmailTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "ca2023fa-ceca-4923-80e4-a3843803536c",
      "name": "Microsoft Outlook Trigger",
      "type": "n8n-nodes-base.microsoftOutlookTrigger",
      "disabled": true,
      "position": [
        1480,
        680
      ],
      "parameters": {
        "fields": [
          "body",
          "toRecipients",
          "subject",
          "bodyPreview"
        ],
        "output": "fields",
        "filters": {},
        "options": {},
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This microsoftOutlookTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1f011214-91a0-4cfa-9d9e-29864937c0a3",
      "name": "Screenshot HTML",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2620,
        420
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
     ...

Output:
The node 'Microsoft Outlook Trigger' (type: n8n-nodes-base.microsoftOutlookTrigger) 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": {
  "microsoftOutlookOAuth2Api": {
    "id": "vTCK0oVQ0WjFrI5H",
    "name": " Outlook 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 'Microsoft Outlook Trigger' node.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "b73fed9b-d56c-4175-a310-8c09ed51acd2",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        80,
        60
      ],
      "parameters": {
        "width": 464,
        "height": 303,
        "content": "## Testing \n\nTesting can be done with CURL or similar.\n\nFor File posting using Form Data\ncurl -X POST \"{{ $env.WEBHOOK_URL }}\" \\\n     -H \"Content-Type: text/csv\" \\\n     --data-binary @path/to/your/file.csv\n\n\nThis can also be tested using the Test workflow"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "6ed4b2cc-444f-44e2-ab91-34337acd7a9b",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1680,
        580
      ],
      "parameters": {
        "color": 4,
        "width": 396,
        "height": 256,
        "content": "## Response\nWhere possible we will be returning a binary object.\n```\nIf there is an error\n```\n{\n  \"status\": \"error\",\n  \"data\": \"error message to display\"\n}\n```"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "4eff962e-e636-4704-835a-672ccd705e16",
      "name": "Extract From File",
      "type": "n8n-nodes-base.extractFromFile",
      "onError": "continueErrorOutput",
      "position": [
        680,
        80
      ],
      "parameters": {
        "options": {},
        "binaryPropertyName": "data0"
      },
      "typeVersion": 1,
      "notes": "This extractFromFile node performs automated tasks as part of the workflow."
    },
    {
      "id": "ccc66f1e-e000-4048-a492-b80fbf8c8fce",
      "name": "Error Response",
      "type": "n8n-nodes-base.respondToWebhook",
      "onError": "continueErrorOutput",
      "position": [
        1900,
        900
      ],
      "parameters": {
        "...

Output:
In node 'Success Response', the parameter 'responseBody' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `={
  "status": "OK",
  "data": {{ JSON.stringify($json.jsondata) }}
}`

**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 'Success Response' parameter 'responseBody'.


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-3644fc21",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.760576",
    "updatedAt": "2025-09-29T07:07:42.760601",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "23291d25-3e1a-4b0d-9b1d-d066e8c04a1f",
      "name": "Customer Lead AI Agent",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -640,
        460
      ],
      "parameters": {
        "text": "=**System Prompt:**\n\nYou are an AI assistant designed to process new leads and generate appropriate responses. Your role includes analyzing lead notes, categorizing them, and generating an email from the system to inform the relevant contact about the inquiry. Do not send the email as if it is directly from the customer; instead, draft it as a notification from the system summarizing the inquiry.\n\n### **Process Flow**\n\n1. **Analyzing Lead Notes:**\n   - Extract key details such as the customer name, organization, contact information, and their specific request.  \n   - Determine if the inquiry relates to products, services, or solutions offered by the company.\n\n2. **Finding the Appropriate Contact(s):**\n   - Search the contact database to find the responsible person(s) for the relevant product, service, or solution.  \n   - If one person is responsible, provide their email.  \n   - If multiple people are responsible, list all emails separated by commas.\n\n3. **Generating an Email Notification:**\n   - Draft a professional email as a notification from the system.\n   - Summarize the customer\u2019s inquiry.\n   - Include all relevant details to assist the recipient in addressing the inquiry.\n\n4. **Handling Invalid Leads:**\n   - If the inquiry is unrelated to products, services, or solutions (e.g., job inquiries or general product inquiries), classify it as invalid and return:  \n     `\"I...

Output:
The node 'Microsoft Outlook' (type: n8n-nodes-base.microsoftOutlook) 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": {
  "microsoftOutlookOAuth2Api": {
    "id": "9gy3uvf3pmBdpEsq",
    "name": "Microsoft Outlook Al Ansari"
  }
}
```

**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 'Microsoft Outlook' node.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "36816ae7-414a-482e-8a50-021885237273",
      "name": "Event Type",
      "type": "n8n-nodes-base.switch",
      "position": [
        -220,
        -140
      ],
      "parameters": {
        "rules": {
          "values": [
            {
              "outputKey": "YOUR_CREDENTIAL_HERE",
              "conditions": {
                "options": {
                  "version": 2,
                  "leftValue": "",
                  "caseSensitive": true,
                  "typeValidation": "strict"
                },
                "combinator": "and",
                "conditions": [
                  {
                    "id": "2162daf8-d23d-4b8f-8257-bdfc5400a3a8",
                    "operator": {
                      "name": "filter.operator.equals",
                      "type": "string",
                      "operation": "equals"
                    },
                    "leftValue": "={{ $json.event_type }}",
                    "rightValue": "row.updated"
                  }
                ]
              },
              "renameOutput": true
            },
            {
              "outputKey": "YOUR_CREDENTIAL_HERE",
              "conditions": {
                "options": {
                  "version": 2,
                  "leftValue": "",
                  "caseSensitive": true,
                  "typeValidation": "strict"
                },
                "combinator": "and",
                "conditions": [
                  {
                    "id": "48e112f6-afe8-40bf-b673-b37446934a62",
                    "operator": {
                      "name": "filter.operator.equals",
                      "type": "string",
                      "operation": "equals"
                    },
                    "leftValue": "={{ $json.event_type }}",
                    "rightValue": "field.created"
                  }
                ]
              },
              "renameOutput": true
            },
            {
   ...

Output:
In node 'Get Webhook Payload', the parameter 'nodeCredentialType' contains an expression that references undefined data.

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

**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 'Get Webhook Payload' parameter 'nodeCredentialType'.


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-42ceef49",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.774939",
    "updatedAt": "2025-09-29T07:07:42.774953",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "22c8d63b-ce3c-4aab-b3f6-4bae8c1b9ec5",
      "name": "Window Buffer Memory",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1460,
        880
      ],
      "parameters": {
        "sessionKey": "YOUR_CREDENTIAL_HERE",
        "sessionIdType": "customKey",
        "contextWindowLength": 20
      },
      "typeVersion": 1.2,
      "notes": "This memoryBufferWindow node performs automated tasks as part of the workflow."
    },
    {
      "id": "45403d5c-6e85-424f-b40b-c6214b57457b",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1880,
        580
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "1111262a-1743-4bae-abf1-f69d2e1a580c",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1360,
        760
      ],
      "parameters": {
        "model": "gpt-4o-2024-08-06",
        "options": {
          "temperature": 0.4
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "XWFTuTtx9oWglhNn",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "df891547-c715-4dc6-bfcc-c0ac5cfcaf02",
      "name": "Make Appointment",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1820,
        840
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK...

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: Disconnected Node

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-127ea7f2",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.790726",
    "updatedAt": "2025-09-29T07:07:42.790784",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "d9e3e2af-1db4-4ef1-a12a-c56df545e09e",
      "name": "Strava Trigger",
      "type": "n8n-nodes-base.stravaTrigger",
      "position": [
        -60,
        0
      ],
      "webhookId": "c656f7eb-6176-48b1-a68f-7e169699cecb",
      "parameters": {
        "event": "update",
        "object": "activity",
        "options": {}
      },
      "credentials": {
        "stravaOAuth2Api": {
          "id": "lI69z0e9sP9DBcrp",
          "name": "Strava account"
        }
      },
      "typeVersion": 1,
      "notes": "This stravaTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "344106a7-f1ce-4ef0-be60-8b0dc6c92fe4",
      "name": "Google Gemini Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        560,
        180
      ],
      "parameters": {
        "options": {},
        "modelName": "models/gemini-2.0-flash-exp"
      },
      "credentials": {
        "googlePalmApi": {
          "id": "MqxJQHgdP5sIvdos",
          "name": "Google Gemini(PaLM) - ali@amjid"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatGoogleGemini node performs automated tasks as part of the workflow."
    },
    {
      "id": "5ea7c2b8-0ddc-414e-b90c-d1269e074d16",
      "name": "Gmail",
      "type": "n8n-nodes-base.gmail",
      "position": [
        1420,
        -200
      ],
      "webhookId": "70ab1218-b5a1-47e7-9e9e-89c5c4f84c15",
      "parameters": {
        "sendTo": "amjid@amjidali.com",
        "message": "={{ $json.html }}",
        "options": {
          "appendAttribution": false
        },
        "subject": "="
      },
      "credent...

Output:
The workflow has a broken data flow. The node '344106a7-f1ce-4ef0-be60-8b0dc6c92fe4' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for '344106a7-f1ce-4ef0-be60-8b0dc6c92fe4'.

**Impact**: Data from '344106a7-f1ce-4ef0-be60-8b0dc6c92fe4' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from '344106a7-f1ce-4ef0-be60-8b0dc6c92fe4' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "344106a7-f1ce-4ef0-be60-8b0dc6c92fe4": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect '344106a7-f1ce-4ef0-be60-8b0dc6c92fe4' to the workflow.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-c3cd7998",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.793629",
    "updatedAt": "2025-09-29T07:07:42.793645",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "200098a9-1a49-49c1-8703-eea0c496a020",
      "name": "Refresh Token",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -1300,
        100
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
        "options": {},
        "queryParametersUi": {
          "parameter": [
            {
              "name": "grant_type",
              "value": "th_refresh_token"
            },
            {
              "name": "access_token",
              "value": "=Your Threads Long-Live Token"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "58373d28-8f22-4224-8ef1-aca9c24d5777",
      "name": "Get Post",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -960,
        100
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}<Your Threads ID>/threads?fields=id,media_product_type,media_type,media_url,permalink,owner,username,text,timestamp,shortcode,thumbnail_url,children,is_quote_post",
        "options": {},
        "queryParametersUi": {
          "parameter": [
            {
              "name": "since",
              "value": "={{ new Date(new Date().setDate(new Date().getDate() - 1)).toISOString().split('T')[0] }}"
            },
            {
              "name": "access_token",
              "value": "={{ $json.access_token }}"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      ...

Output:
The node 'Sticky Note7' 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 Note7'.


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": [
    {
      "id": "835afb8f-5bb3-42da-9694-d04646a80cef"
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        0,
        0
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1e85bf4f-52d5-4ec0-8d0b-a1deeb30c9c6",
      "name": "Call Rapid API",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        880,
        0
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "sendQuery": true,
        "sendHeaders": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "linkedin_url",
              "value": "={{ $json[\"Linkedin Profile\"] }}"
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "x-rapidapi-key"
            },
            {
              "name": "x-rapidapi-host"
            }
          ]
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "9fa011f4-d1fe-46d2-abda-28ae33929874",
      "name": "Filter already enriched",
      "type": "n8n-nodes-base.filter",
      "position": [
        440,
        0
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "5907d2f7-b15d-41cc-8fee-45631bb874e1",
              "operator": {
                "type": "string",
                "operation": "empty",
                "singleValue": true
              },
              "leftValue": "={{ $json.about...

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "a768bce6-ae26-464c-95fc-009edea4f94d",
      "name": "Set your company's variables",
      "type": "n8n-nodes-base.set",
      "position": [
        440,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "6a8063b6-1fd8-429a-9f13-b7512066c702",
              "name": "your_company_name",
              "type": "string",
              "value": "Pollup Data Services"
            },
            {
              "id": "3e6780d6-86d0-4353-aa17-8470a91f63a8",
              "name": "your_company_activity",
              "type": "string",
              "value": "Whether it\u2019s automating recurring tasks, analysing data faster, or personalising customer interactions, we build bespoke AI agents to help your workforce work smarter."
            },
            {
              "id": "1b42f1b3-20ed-4278-952d-f28fe0f03fa3",
              "name": "your_email",
              "type": "string",
              "value": "thomas@pollup.net"
            },
            {
              "id": "7c109ba2-d855-49d5-8700-624b01a05bc1",
              "name": "your_name",
              "type": "string",
              "value": "Justin"
            }
          ]
        }
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "ca729f8d-cab8-4221-addb-aa23813d80b4",
      "name": "Get linkedin Posts",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1300,
        0
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "sendQuery": true,
        "sendHeaders": true,
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth",
        "queryParameters": {
          "parameters": [
            {
              "name": "linkedin_url",
              "value": "={{ $('G...

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

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `## Call RapidAPI Fresh Linkedin Profile Data
You have to create an account in [RapidAPI]({{ $env.API_BASE_URL }} and subscribe to Fresh LinkedIn Profile Data. With a free account you will be able to scrape 100 profile / month.
After your subscription you will have to choose as Generic Auth Type: Header Auth and then put as header name: "x-rapidapi-key" and the value given in the RapidAPI interface
`

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

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

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-5d7d000d",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.819147",
    "updatedAt": "2025-09-29T07:07:42.819186",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "42cc4260-626e-4f83-b1c3-c78c99b78b38",
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        820,
        486.1164603611751
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "f21386ff-f8db-4f5d-a44c-15484d1e4ab7",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        380,
        866.1164603611751
      ],
      "parameters": {
        "color": 6,
        "width": 2547,
        "height": 751,
        "content": "## Subworkflow"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "82851e4a-33a1-461b-965f-f51efcb5af90",
      "name": "n8n",
      "type": "n8n-nodes-base.n8n",
      "position": [
        1080,
        580
      ],
      "parameters": {
        "filters": {},
        "requestOptions": {}
      },
      "credentials": {
        "n8nApi": {
          "id": "hYWXj2T43Yhf6coc",
          "name": "Hirempire"
        }
      },
      "typeVersion": 1,
      "notes": "This n8n node performs automated tasks as part of the workflow."
    },
    {
      "id": "90cac8e2-9509-4d48-9038-bb653ffbdf9d",
      "name": "Return",
      "type": "n8n-nodes-base.set",
      "position": [
        2720,
        1080
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "8d513345-6484-431f-afb7-7cf045c90f4f",
       ...

Output:
The node 'Get file data' 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 'Get file data'.


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": "4ca55c6e-cf2e-4239-82a9-88d0a201e761",
      "name": "List upgradable packages",
      "type": "n8n-nodes-base.ssh",
      "notes": "apt list --upgradable",
      "position": [
        -280,
        0
      ],
      "parameters": {
        "command": "apt list --upgradable"
      },
      "credentials": {
        "sshPassword": {
          "id": "Ps31IKTeseWFlA0g",
          "name": "SSH Password account"
        }
      },
      "notesInFlow": true,
      "typeVersion": 1,
      "alwaysOutputData": false
    },
    {
      "id": "ae1f0a55-31aa-494b-baa6-822dc606188e",
      "name": "Send Email through SMTP",
      "type": "n8n-nodes-base.emailSend",
      "position": [
        380,
        0
      ],
      "webhookId": "8073c571-b36f-4330-a510-ca2ff2924fbf",
      "parameters": {
        "html": "=The following packages can be updated on your server:\n\n{{ $json.htmlList }}\n\nPlease login and perform upgrade.",
        "options": {},
        "subject": "Server needs updates",
        "toEmail": "change.me@example.com",
        "fromEmail": "change.me@example.com"
      },
      "credentials": {
        "smtp": {
          "id": "uiNePdJaDng5a43S",
          "name": "SMTP account"
        }
      },
      "typeVersion": 2.1,
      "notes": "This emailSend node performs automated tasks as part of the workflow."
    },
    {
      "id": "e1d76671-d94c-40d5-9364-623db9319f11",
      "name": "Run workflow every day",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -540,
        0
      ],
      "parameters": {
        "rule": {
          "interval": [
            {}
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "ec4d722a-b88c-42da-971c-28ad5774596d",
      "name": "Format as HTML list",
      "type": "n8n-nodes-base.code",
      "position": [
        -60,
        0
      ],
      "...

Output:
The node 'Format as HTML list' 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 'Format as HTML list'.


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": "2pMoIW58KP6ZeGir",
  "meta": {
    "instanceId": "workflow-b1fe2309",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.852939",
    "updatedAt": "2025-09-29T07:07:42.852955",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Luma AI Dream Machine - Simple v1 - AK",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "dbe1dbcc-05a0-4439-869c-157e51a99dd1",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -440,
        0
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "603f7fdd-e590-4a51-b606-a9bb9396a0c0",
      "name": "Text 2 Video",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        220,
        0
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n  \"model\": \"ray-2\",\n  \"prompt\": {{ JSON.stringify($('Global SETTINGS').first().json.video_prompt + \"; camera motion: \" + $json.action) }},\n  \"aspect_ratio\": \"{{ $('Global SETTINGS').first().json.aspect_ratio }}\",\n  \"duration\": \"{{ $('Global SETTINGS').item.json.duration }}\",\n  \"loop\": {{ $('Global SETTINGS').first().json.loop }},\n  \"callback_url\": \"{{ $('Global SETTINGS').first().json.callback_url }}\"\n  \n}",
        "sendBody": true,
        "sendHeaders": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth",
        "headerParameters": {
          "parameters": [
            {
              "name": "accept",
              "value": "application/json"
 ...

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-c4b315ab",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.870010",
    "updatedAt": "2025-09-29T07:07:42.870025",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "0951fd33-1811-4a89-b84f-f46dc9e6fde1",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        20,
        -340
      ],
      "webhookId": "cdc03fce-33b6-4eed-86b5-f628994e5e31",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "699c2f89-5547-4d28-92a9-5e216aecb251",
      "name": "AI Agent",
      "type": "n8n-nodes-base.noOp",
      "position": [
        240,
        -340
      ],
      "parameters": {
        "options": {
          "maxIterations": 15,
          "systemMessage": "=You are a helpful assistant.\nCurrent timestamp is {{ $now }}"
        }
      },
      "typeVersion": 1.7,
      "notes": "This agent node performs automated tasks as part of the workflow."
    },
    {
      "id": "640c29f7-b67e-49f6-a864-c9b396c446b7",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        160,
        -100
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o",
          "cachedResultName": "gpt-4o"
        },
        "options": {
          "temperature": 0.2
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "5LVOlVwHUgB8MAj2",
          "name": "OpenAI - n8n project"
        }
      },
      "typeVersion": 1.2,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "807630b4-c138-4b66-a438-fb70eab12a07",
 ...

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: 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:
{
  "name": "Automatically Update YouTube Video Descriptions with Inserted Text",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "19cafddc-6199-4418-8213-9743c34c9176",
      "name": "Get All Videos",
      "type": "n8n-nodes-base.youTube",
      "position": [
        480,
        380
      ],
      "parameters": {
        "limit": 3,
        "filters": {},
        "options": {
          "order": "date"
        },
        "resource": "video"
      },
      "typeVersion": 1,
      "notes": "This youTube node performs automated tasks as part of the workflow."
    },
    {
      "id": "63a6a8e6-994f-46ab-a731-609549fec99f",
      "name": "Update Video Description",
      "type": "n8n-nodes-base.youTube",
      "position": [
        1320,
        460
      ],
      "parameters": {
        "title": "={{ $('Get Specific Video').item.json.snippet.title }}",
        "videoId": "={{ $('Get Specific Video').item.json.id}}",
        "resource": "video",
        "operation": "update",
        "categoryId": "={{ $('Get Specific Video').item.json.snippet.categoryId }}",
        "regionCode": "US",
        "updateFields": {
          "tags": "={{ $('Get Specific Video').item.json.snippet.tags.join() }}",
          "description": "={{ $json.updatedDescription }}"
        }
      },
      "typeVersion": 1,
      "notes": "This youTube node performs automated tasks as part of the workflow."
    },
    {
      "id": "ce147272-f6c3-4cfb-954b-9a77c63a6232",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        120,
        380
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "9ba206b2-1161-41a3-8581-d60dae665096",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [...

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

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

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

**Solutions**:

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

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

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

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

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


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: 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-00728dd5",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.902230",
    "updatedAt": "2025-09-29T07:07:42.902253",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "3239827a-ba1c-4131-bfbe-6fa7d35bfaae",
      "name": "Parameters",
      "type": "n8n-nodes-base.set",
      "position": [
        360,
        720
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "1b65def6-4984-497d-a4bc-232af22927ad",
              "name": "directory",
              "type": "string",
              "value": "{{ $env.WEBHOOK_URL }}"
            },
            {
              "id": "c8c98f88-9f22-4574-88b8-1db99f6e4ec4",
              "name": "parentdrive",
              "type": "string",
              "value": "{{ $env.WEBHOOK_URL }}"
            }
          ]
        }
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "de6411b5-5d53-4d42-b3b6-0fc4b84c52ea",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        180,
        720
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 1,
              "triggerAtMinute": 30
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "5b25b86a-c957-4aa3-9c10-b884ee30d9a1",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        160,
        460
      ],
      "parameters": {
        "color": 3,
        "width": 560,
        "height": 140,
        "content": "## Simplest n8n Work...

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:
{
  "meta": {
    "instanceId": "workflow-e1feccd9",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.918095",
    "updatedAt": "2025-09-29T07:07:42.918182",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "56e70371-54a2-4421-9ce2-e626d9c6ef60",
      "name": "Form",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        -440,
        -120
      ],
      "webhookId": "622256ee-9248-43a2-840e-b28436800aac",
      "parameters": {
        "options": {},
        "formTitle": "Form",
        "formFields": {
          "values": [
            {
              "fieldLabel": "name",
              "requiredField": true
            }
          ]
        }
      },
      "typeVersion": 2.2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "7cbd263e-ca5b-436e-bdce-c30a66df73a6",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -440,
        100
      ],
      "parameters": {
        "color": 3,
        "width": 320,
        "content": "# \ud83d\udc46\nPlease add authentication to form by selecting Basic Auth to prevent unauthorized access to the form.\n"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "e1c4d0a8-6e48-45d9-bec6-ee8bb3751b4f",
      "name": "Copy template file",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        -220,
        -120
      ],
      "parameters": {
        "name": "={{ $json.name }}",
        "fileId": {
          "__rl": true,
          "mode": "list",
          "value": "1KyR0UMIOpEkjwa6o1gTggNBP2A6EWwppV59Y6NQuDYw",
          "cachedResultUrl": "{{ $env.WEBHOOK_URL }}",
          "cachedResultName": "Szablon: Dokument testowy"
        },
        ...

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:
{
  "meta": {
    "instanceId": "workflow-82dd624a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.899675",
    "updatedAt": "2025-09-29T07:07:42.899750",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "17ca0437-6101-4277-9ed2-e37e6b92df02",
      "name": "When clicking 'Test workflow'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -160,
        280
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "d3dd600a-2ab5-4d52-92ef-ab3f29dd1790",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        260,
        400
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "typeVersion": 1.2,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "c29d58a2-243b-41ab-99c6-f8a8c92219cf",
      "name": "Structured Output Parser",
      "type": "n8n-nodes-base.noOp",
      "position": [
        460,
        400
      ],
      "parameters": {
        "schemaType": "manual",
        "inputSchema": "{\n  \"type\": \"object\",\n  \"properties\": {\n    \"message\": {\n      \"type\": \"string\"\n    },\n    \"mail_object\": {\n      \"type\": \"string\"\n    }\n  }\n}"
      },
      "typeVersion": 1.2,
      "notes": "This outputParserStructured node performs automated tasks as part of the workflow."
    },
    {
      "id": "3cb31448-5bc3-47c2-a119-d9e33a464d1f",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -160,
        80
      ],
      "parameters": {
        "rule": {
          ...

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:
{
  "meta": {
    "instanceId": "workflow-f4de74b3",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.919958",
    "updatedAt": "2025-09-29T07:07:42.919976",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "58c6003f-3311-448b-a949-4fbc22b38e2e",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -560,
        80
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "67e4f66c-256f-4e45-b98e-d2872a416ff5",
      "name": "Get all Users",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        80,
        100
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {
          "pagination": {
            "pagination": {
              "parameters": {
                "parameters": [
                  {
                    "name": "cursor",
                    "value": "={{ $response.body.nextCursor }}"
                  }
                ]
              },
              "completeExpression": "={{ !$response.body.nextCursor }}",
              "paginationCompleteWhen": "other"
            }
          }
        },
        "sendQuery": true,
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "queryParameters": {
          "parameters": [
            {
              "name": "limit",
              "value": "5"
            }
          ]
        },
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "credentials": {
        "n8nApi": {
          "id": "dzYjDgtEXtpRPKhe",
          "name": "n8n account"
        },
        "httpHeaderAuth": {
          "id": "iiLmD473RYjGLbCA",
          "name": "Squarespace API key - Apps script"
       ...

Output:
The node 'Get non-users' 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 'Get non-users'.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-90558561",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.921499",
    "updatedAt": "2025-09-29T07:07:42.921514",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "634f2fc5-0ba7-42ad-bdf5-ade3415dd288",
      "name": "Landing Page Url",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        -200,
        580
      ],
      "webhookId": "afe067a5-4878-4c9d-b746-691f77190f54",
      "parameters": {
        "options": {},
        "formTitle": "Website Security Scanner",
        "formFields": {
          "values": [
            {
              "fieldLabel": "Landing Page Url",
              "placeholder": "{{ $env.WEBHOOK_URL }}",
              "requiredField": true
            }
          ]
        },
        "formDescription": "Check your website for security vulnerabilities and get a detailed report"
      },
      "typeVersion": 2.2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "6cee63ca-d0f6-444a-b882-22da1a9fd70c",
      "name": "Scrape Website",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        0,
        580
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {
          "redirect": {
            "redirect": {
              "maxRedirects": 5
            }
          },
          "response": {
            "response": {
              "fullResponse": true,
              "responseFormat": "text"
            }
          }
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "0d5d1e76-e627-4565-a1ee-6a610f4b2028",
      "name": "OpenAI Headers Analysis",
      "type": "n8n-nodes-base.noOp",
      "position": [
        340,
 ...

Output:
The workflow has a broken data flow. The node '04427ef7-515d-4a1a-88d2-ade10aeefc87' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for '04427ef7-515d-4a1a-88d2-ade10aeefc87'.

**Impact**: Data from '04427ef7-515d-4a1a-88d2-ade10aeefc87' will not flow to any downstream nodes, effectively stopping the workflow at this point.

**Solution**:
1. Open the workflow in the n8n editor
2. Draw a connection from '04427ef7-515d-4a1a-88d2-ade10aeefc87' to the next node in the flow
3. Verify the connection appears in the connections object

**Programmatic Fix**: Add the connection back to the workflow JSON:
```json
"connections": {
  "04427ef7-515d-4a1a-88d2-ade10aeefc87": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect '04427ef7-515d-4a1a-88d2-ade10aeefc87' to the workflow.


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-5ed0dc81",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.960875",
    "updatedAt": "2025-09-29T07:07:42.960893",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "4815105b-4175-45ad-85bc-07917de9526c",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -140,
        -720
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "b8f2a706-4868-4f0d-99a1-c31e1f7022e3",
      "name": "AI Agent",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1220,
        -580
      ],
      "parameters": {
        "text": "=Article Title: {{ $json.title }}\nArticle Link: {{ $json.link }}\nArticle Content: {{ $json.clean_content }}",
        "options": {
          "systemMessage": "=You are a content marketing assistant. Based on the article metadata (ID, title) and cleaned content, generate a short LinkedIn promotional message for a professional audience.\n\nFollow this structure:\n\nStart with a hook that grabs attention (a bold insight, surprising fact, or thought-provoking question).\n\nBriefly summarize the article\u2019s value \u2014 what readers will learn or gain from it.\n\nInclude a clear call-to-action encouraging readers to read the article.\n\nEnd with this author signature and invitation:\n\u201c\u2014\nSamir Saci\nSupply Chain Data Scientist & Founder of LogiGreen\n\ud83d\udce9 Contact me: {{ $env.WEBHOOK_URL }}\n\nUse a professional and engaging tone. Do not include hashtags or Markdown formatting."
        },
        "promptType": "define"
      },
      "typeVersion": 1.8,
      "notes": "This agent node performs automated tasks as part of the workflow."
    ...

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:
{
  "meta": {
    "instanceId": "workflow-5ce3a406",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.946189",
    "updatedAt": "2025-09-29T07:07:42.946198",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "c4dca8f0-98fa-4b06-a806-1ab271f024a2",
      "name": "Config",
      "type": "n8n-nodes-base.set",
      "position": [
        120,
        460
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "a916dcbd-d681-4e09-9ce9-0f50a1b4290b",
              "name": "keep",
              "type": "string",
              "value": "=last"
            },
            {
              "id": "949a2f76-5981-4fd2-9665-b10db26e2f48",
              "name": "action",
              "type": "string",
              "value": "=flag"
            },
            {
              "id": "7f4502b4-c330-4c9c-ab89-ba53874aafbb",
              "name": "owner",
              "type": "string",
              "value": "={{ $json.owner || $json.owners[0].emailAddress }}"
            },
            {
              "id": "592eb79e-28db-4470-8347-36b2a661cb03",
              "name": "folder",
              "type": "string",
              "value": "={{ $json.folder || $json.parents[0]}}"
            }
          ]
        }
      },
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "2562ed4a-8ecd-4a32-ae51-bc85daa9817b",
      "name": "Edit Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        1800,
        440
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "1d28f976-2467-4d18-8698-556d29a5f8c0",
              "name": "isDuplicate",
              "type": "boolean",
         ...

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:
{
  "meta" {
    "instanceId": "workflow-dec4ad6c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.945531",
    "updatedAt": "2025-09-29T07:07:42.945548",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "b87cc222-82ec-4b46-9573-68f41d096969",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        640,
        620
      ],
      "parameters": {
        "color": 7,
        "width": 740,
        "height": 680,
        "content": "## 2. Manually Convert XLSX to Markdown\n[Learn more about the Extract From File node]({{ $env.WEBHOOK_URL }}\n\nToday's LLMs cannot parse Excel files directly so the best we can do is to convert the spreadsheet into a format that they can, namely markdown. This conversion is also a good solution for excels which aren't really datasheets - the cells are used like layout elements - which is still common for invoices and purchase orders.\n\nTo perform the conversion, we can use the 'Extract from File' node to get the each row from the xlsx and then iterate and concatenate to form our markdown table using the code node."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "c4c55042-02c8-4364-ae7e-d1ec5a75437a",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1400,
        620
      ],
      "parameters": {
        "color": 7,
        "width": 640,
        "height": 680,
        "content": "## 3. Extract Purchase Order Details using AI\n[Learn more about the Information Extractor]({{ $env.WEBHOOK_URL }}\n\nData entry is probably the number one reason as to why we need AI/LLMs. This time consuming and menial task can be completed in seconds and with a high degree of accuracy. Here, we ask the AI to ex...

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

Add the missing colon after the property name.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-7d86a52c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.961175",
    "updatedAt": "2025-09-29T07:07:42.961185",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "9ede57d1-57de-44d5-bf64-38632e54dd73",
      "name": "Filter Fields",
      "type": "n8n-nodes-base.set",
      "position": [
        580,
        80
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "d492ffce-8ece-443d-9fc3-caa9a7a90744",
              "name": "base_currency",
              "type": "string",
              "value": "={{ $json.base_code }}"
            },
            {
              "id": "33e67974-8cee-4d1f-b144-c4c07b149bab",
              "name": "time_last_update_utc",
              "type": "string",
              "value": "={{ new Date($json[\"time_last_update_utc\"]).toLocaleDateString('en-US', { year: 'numeric', month: 'long', day: 'numeric', timeZone: 'UTC' }) + ' at ' + new Date($json[\"time_last_update_utc\"]).toISOString().substring(11, 16) + ' UTC' }}\n"
            }
          ]
        }
      },
      "notesInFlow": true,
      "retryOnFail": true,
      "typeVersion": 3.4,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "7bb820ce-b6aa-46b6-9546-0a3d7f30fa54",
      "name": "Final Outputs",
      "type": "n8n-nodes-base.merge",
      "position": [
        860,
        180
      ],
      "parameters": {
        "mode": "combineBySql"
      },
      "notesInFlow": true,
      "typeVersion": 3,
      "notes": "This merge node performs automated tasks as part of the workflow."
    },
    {
      "id": "4eb99392-7b5c-4ec8-8eeb-56b01d5778f6",
      "name": "USD Query",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
    ...

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

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

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

**Solutions**:

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

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

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

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

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


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: 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-570bdaa1",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.984244",
    "updatedAt": "2025-09-29T07:07:42.984404",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "53bf4cb6-8f55-4d8d-b4af-48345f75cdd5",
      "name": "Daily Trigger1",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -660,
        6580
      ],
      "parameters": {
        "rule": {
          "interval": [
            {}
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "774624c1-cb4d-4355-9ed7-448d393c5f3b",
      "name": "Set Date1",
      "type": "n8n-nodes-base.set",
      "position": [
        -440,
        6580
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "today",
              "value": "={{ new Date().toISOString().split('T')[0] }}"
            }
          ]
        },
        "options": {}
      },
      "typeVersion": 1,
      "notes": "This set node performs automated tasks as part of the workflow."
    },
    {
      "id": "951eb189-8143-48d7-88c9-3ce235de83f6",
      "name": "Sticky Note16",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -260,
        6400
      ],
      "parameters": {
        "content": "### \ud83d\udd10 How to Get Your Product Hunt Token\n\nTo get your Product Hunt token, follow the official guide here:  \n\ud83d\udc49 [Product Hunt OAuth Token Guide]({{ $env.API_BASE_URL }}\n"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "ae83bb19-a981-4b28-8dcd-ecd9501bd3d0",
      "name": "Sticky Note17",
      "type": "n8n-nodes-base.stickyNote",
  ...

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:
{
  "meta": {
    "instanceId": "workflow-5c8043ab",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.964932",
    "updatedAt": "2025-09-29T07:07:42.964988",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "4c9256c8-8dd7-4e81-8aef-0789e6808808",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -260,
        80
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1935ad6a-ade4-4073-9205-0c3dd1091c0f",
      "name": "Set parameters for next run",
      "type": "n8n-nodes-base.code",
      "position": [
        1520,
        460
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const desired_path = $('Create desired path').item.json.desired_path;\ndesired_path.shift();\n\nreturn {\n  desired_path: desired_path,\n  google_drive_folder_id: $json.id,\n}"
      },
      "typeVersion": 2,
      "notes": "This code node performs automated tasks as part of the workflow."
    },
    {
      "id": "5d99a9c4-57c6-4052-b093-fb0c32d9ff56",
      "name": "Execute Workflow Trigger",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        -40,
        460
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This executeWorkflowTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "879b92ae-edab-4d73-96d0-4df36d12fbb2",
      "name": "Dummy input data",
      "type": "n8n-nodes-base.set",
      "position": [
        -40,
        80
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "041e1077-f4dc-476f-b75a-6d60d9c8d0b9",
  ...

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-4502194a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.974938",
    "updatedAt": "2025-09-29T07:07:42.974965",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "a9bbe9d0-51aa-40f8-8931-f405c695c732",
      "name": "Window Buffer Memory",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1140,
        140
      ],
      "parameters": {
        "sessionKey": "YOUR_CREDENTIAL_HERE",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3,
      "notes": "This memoryBufferWindow node performs automated tasks as part of the workflow."
    },
    {
      "id": "2d6315d6-959d-4e16-97ed-30839d826ce2",
      "name": "AI Agent",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1080,
        -100
      ],
      "parameters": {
        "text": "=Ticker = {{ $json[\"Ticker symbol:\"] }}",
        "options": {
          "systemMessage": "=# Overview\nYou are an AI agent specialized in stock analysis. You provide technical analysis and sentiment for stock investments by combining chart data and news sentiment.\n\n# Instructions\n1. When a user requests an analysis of a stock with its symbol:\n  - Send the stock symbol to both tools **technical_analysis** and **trends_analysis**\n  - Analyze the combined data and prepare a JSON report with your insights\n  - Provide a clear recommendation (positive, neutral, or negative)\n2. Your output must be in the format of a structured JSON object that will be used to fill an HTML template.\n3. Translate the article titles in topArticles to Hebrew\n4. Translate the sentimentHebrew results to only one of these values:\n\"\u05d7\u05d9\u05d5\u05d1\u05d9-\u05d7\u05d6\u05e7/\u05d7\u05d9\u05d5\u05d1\u05d9-\u05d7\u05dc\u05e9/\u05e0\u05d9\u05d9\u05d8\u05e8\u05dc\u05d9/\u05e9\u05dc\u05d9\u05dc\u05d9-\u05d...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-8a236901",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.990338",
    "updatedAt": "2025-09-29T07:07:42.990441",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "62b3c7cb-1993-44f1-8b86-38a34ca1d029",
      "name": "Information Extractor",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -200,
        500
      ],
      "parameters": {
        "text": "={{ $json.query }}",
        "options": {},
        "schemaType": "fromJson",
        "jsonSchemaExample": "{\n  \"name\": \"Information Extractor\",\n  \"type\": \"n8n-nodes-base.informationExtractor\",\n  \"parameters\": {\n    \"extract\": [\n      {\n        \"name\": \"items\",\n        \"pattern\": \"(latte|coffee|tea|cappuccino)\"\n      },\n      {\n        \"name\": \"quantity\",\n        \"pattern\": \"\\\\d+\"\n      },\n      {\n        \"name\": \"table\",\n        \"pattern\": \"table number (\\\\d+)\"\n      }\n    ]\n  }\n}\n"
      },
      "typeVersion": 1,
      "notes": "This informationExtractor node performs automated tasks as part of the workflow."
    },
    {
      "id": "75883f27-af58-4791-9e1a-a70b83e1cead",
      "name": "OpenAI Chat Model1",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -180,
        740
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "OizdHUANhz9NIHyd",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "aeefdd4b-bf7d-4824-97d8-0afc356fb7d6",
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "p...

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

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

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

**Solutions**:

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

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

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

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

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

Configure appropriate timeouts and error handling for HTTP requests.


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-1266eb00",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:42.987176",
    "updatedAt": "2025-09-29T07:07:42.987189",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "4f42007b-3813-410f-a608-5af89459b14f",
      "name": "Check Authorization Header",
      "type": "n8n-nodes-base.if",
      "position": [
        -20,
        20
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{ $('Webhook').item.json.headers.authorization }}",
              "value2": "=Bearer {{ $json.config.bearerToken }}"
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "86d6157e-593d-4370-a480-1a9417300555",
      "name": "401 Unauthorized",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        340,
        280
      ],
      "parameters": {
        "options": {
          "responseCode": 401
        },
        "respondWith": "json",
        "responseBody": "{\n  \"code\": 401,\n  \"message\": \"Unauthorized: Missing or invalid authorization token.\",\n  \"hint\": \"Ensure the request includes a valid 'Authorization' header (e.g., 'Bearer YOUR_SECRET_TOKEN').\"\n}"
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "0831093a-adef-41dc-8ac0-2e1998fc22ad",
      "name": "200 OK",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1140,
        20
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "b4f42651-c7f6-43a3...

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.