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:
{
  "name": "Parents smart bot",
  "nodes": [
    {
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {
          "download": true
        }
      },
      "type": "n8n-nodes-base.telegramTrigger",
      "typeVersion": 1.2,
      "position": [
        -560,
        20
      ],
      "id": "a1117c0e-8fcc-4de6-b5c3-fe76ea10b975",
      "name": "Telegram Trigger",
      "webhookId": "a9b9daf6-4fb2-4c08-a7e3-8dc69a155511",
      "credentials": {
        "telegramApi": {
          "id": "FXdJyw1yYOOUGF1m",
          "name": "Telegram account"
        }
      },
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.text }} {{ $json.fullPrompt }}\n",
        "options": {
          "systemMessage": "=# Overview\nYou are the central brain of a smart personal assistant built especially for busy parents.  \nYour job is to understand the user's intent and delegate the request to the most appropriate specialized agent (tool).  \nYou do not generate content yourself \u2014 only orchestrate which tool should do what.\n\nYou\u2019re here to help parents stay organized, reduce cognitive load, and make their lives easier \u2013 whether it's managing appointments, messaging people, creating content, or helping with daily logistics.\n\n## Tools\n- Email Agent: Use this tool to take action in email.\n- Calendar Agent: Use this tool to take action in calendar.\n- Contact Agent: Use this to get, update, or add contacts (like the doctor, the teacher, family, etc).\n- Content Creator Agent: Use this for generating any written content \u2014 reminders, messages, summaries, posts, etc.\n- Tavily: Use this to search the web and gather quick facts or ideas.\n- Calculator: Use this tool to perform calculations or evaluate numerical expressions when needed\n\n## Rules\n- Never write emails, posts, or summaries your...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-80a1d671",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.476022",
    "updatedAt": "2025-09-29T07:07:57.476041",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "e6d85380-7cfa-4c6e-9b0f-d390ad0cbc67",
      "name": "HTTP Request1",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1400,
        -180
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "method": "=POST",
        "options": {
          "allowUnauthorizedCerts": true
        },
        "jsonBody": "={{ $json.output.details }}",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "pJcVQegRQ5mpraoQ",
          "name": "Proxmox"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "9b497de8-0f01-40b1-8f8e-28fad1f758c4",
      "name": "Proxmox API Documentation",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -300,
        40
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "toolDescription": "This is Proxmox API Documentation ensure to read the details from here"
      },
      "typeVersion": 1.1,
      "notes": "This toolHttpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "e7ac54a9-37be-44b5-b58e-8b631892367e",
      "name": "Auto-fixing Output Parser",
      "type": "n8n-nodes-base.noOp",
      "position": [
        40,
        60
      ],
      "parameters": {
        "options": {
          "prompt": "Instructions:\n--------------\n{instructions}\n--------------\nCompleti...

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

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

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

**Solutions**:

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

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

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

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

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

Add validation for empty or null input data.


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

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

Workflow JSON:
{
  "id": "SvYHgLmzosuLAe4A",
  "meta": {
    "instanceId": "workflow-d0fb0962",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.536376",
    "updatedAt": "2025-09-29T07:07:57.536404",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Google Calendar Event Reminder",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "dff5d952-23cb-4822-9aec-0dcae3de568a",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "disabled": true,
      "position": [
        -40,
        300
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes",
              "minutesInterval": 1
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "a6de9944-1dd7-430e-a1d9-100710ddfa9c",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        700,
        500
      ],
      "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": "6d2208a6-6000-4b6b-a82c-e346b7885409",
      "name": "Get upcoming event",
      "type": "n8n-nodes-base.googleCalendar",
      "position": [
        240,
        300
      ],
      "parameters": {
        "limit": 5,
        "options": {},
        "timeMax": "={{ $now.plus({ hour: 1, minute:1 }) }}",
        "timeMin": "={{ $now.plus({ hour: 1 }) }}",
        "calendar": {
          "__rl": true,
          "mode": "list",
          "value": "da...

Output:
The node 'OpenAI Chat Model' (type: n8n-nodes-base.noOp) requires credentials but the 'credentials' configuration is missing.

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

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "openAiApi": {
    "id": "CDX6QM4gLYanh0P4",
    "name": "OpenAi account"
  }
}
```

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

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


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:
{
  "name": "Ultimate Personal Assistant",
  "nodes": [
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.text }}",
        "options": {
          "systemMessage": "=# Overview\nYou are the ultimate personal assistant. Your job is to send the user's query to the correct tool. You should never be writing emails, or creating even summaries, you just need to call the correct tool.\n\n## Tools\n- emailAgent: Use this tool to take action in email\n- calendarAgent: Use this tool to take action in calendar\n- contactAgent: Use this tool to get, update, or add contacts\n- contentCreator: Use this tool to create blog posts\n- Tavily: Use this tool to search the web\n\n## Rules\n- Some actions require you to look up contact information first. For the following actions, you must get contact information and send that to the agent who needs it:\n  - sending emails\n  - drafting emails\n  - creating calendar event with attendee\n\n## Examples\n1) \n- Input: send an email to nate herkelman asking him what time he wants to leave\n  - Action: Use contactAgent to get nate herkelman's email\n  - Action: Use emailAgent to send the email. You will pass the tool a query like \"send nate herkelman an email to ask what time he wants to leave. here is his email: [email address]\n- Output: The email has been sent to Nate Herkelman. Anything else I can help you with?\n\n\n## Final Reminders\nHere is the current date/time: {{ $now }}"
        }
      },
      "type": "n8n-nodes-base.noOp",
      "typeVersion": 1.7,
      "position": [
        440,
        -100
      ],
      "id": "f1344298-a586-4a63-a113-b9581ae93c45",
      "name": "Ultimate Assistant",
      "notes": "This agent node performs automated tasks as part of the workflow."
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "value": "gpt-4o",
          "mode": "list",
          "cachedResultName": "gpt-4o"
        },
        "options": {}
      },
      "typ...

Output:
The node 'Window Buffer Memory' 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 'Window Buffer Memory'.


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

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

Workflow JSON:
{
  "id": "W1xEzKKEd1qV2D7V",
  "meta": {
    "instanceId": "workflow-378dd17e",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.620413",
    "updatedAt": "2025-09-29T07:07:57.620425",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "2. Add Beehiiv newsletter subscribers from Gumroad sales",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "18e8530e-d04f-47d4-b406-b2961d45f1c1",
      "name": "Gumroad Sale Trigger",
      "type": "n8n-nodes-base.gumroadTrigger",
      "position": [
        -380,
        -280
      ],
      "webhookId": "98ba7c08-2193-4ddf-9249-af7899716925",
      "parameters": {
        "resource": "sale"
      },
      "credentials": {
        "gumroadApi": {
          "id": "wgjGSvLjsRBJImsQ",
          "name": "Gumroad account"
        }
      },
      "typeVersion": 1,
      "notes": "This gumroadTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "6e464a73-a5c0-4a5d-95ce-c3cc2547a373",
      "name": "append row in CRM",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        300,
        -280
      ],
      "parameters": {
        "columns": {
          "value": {
            "date": "={{ $('Gumroad Sale Trigger').item.json.sale_timestamp }}",
            "email": "={{ $('Gumroad Sale Trigger').item.json.email }}",
            "country": "={{ $('Gumroad Sale Trigger').item.json.ip_country }}",
            "product name": "={{ $('Gumroad Sale Trigger').item.json.product_name }}"
          },
          "schema": [
            {
              "id": "date",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "date",
              "defaultMatch": false,
              "can...

Output:
The node 'Notify in channel' 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 'Notify in channel'.


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

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

Workflow JSON:
{
  "id": "YkATyvsBXigxnMgo",
  "meta": {
    "instanceId": "workflow-7425d9ee",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.611208",
    "updatedAt": "2025-09-29T07:07:57.611222",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "AI-Driven WooCommerce Product Importer with SEO",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "aa2d7a06-6e8d-4abc-ab5f-53e9698b1655",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -360,
        -340
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "1f2465ab-90fa-44f1-8c06-58b1436dccd0",
      "name": "OpenRouter Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        180,
        160
      ],
      "parameters": {
        "model": "google/gemini-2.0-flash-exp:free",
        "options": {}
      },
      "credentials": {
        "openRouterApi": {
          "id": "pb06rfB4xmxzVe3Q",
          "name": "OpenRouter"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenRouter node performs automated tasks as part of the workflow."
    },
    {
      "id": "29832953-a3e1-481d-a8bb-238bbf3c736c",
      "name": "SEO Expert",
      "type": "n8n-nodes-base.noOp",
      "position": [
        200,
        -60
      ],
      "parameters": {
        "text": "=Create metatitle and metadescription in the language of the following product:\n\n- Title: {{ $('Create product').item.json.name }}\n- Category: {{ JSON.stringify($('Create product').item.json.categories) }}\n- Short Description: {{ $('Create product').item.json.short_description }}\n- Description: {{ $('Create product').it...

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: Missing Credentials

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

Workflow JSON:
{
  "id": "a4GTp998ENMMfuqK",
  "meta": {
    "instanceId": "workflow-f1198265",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.640642",
    "updatedAt": "2025-09-29T07:07:57.640711",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Save new Files received on Telegram to Google Drive",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "0fcb072b-ea4b-43b2-ad7c-46ad62b1e2ad",
      "name": "On new Telegram Message",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        900,
        520
      ],
      "webhookId": "1e92584a-dd10-4fec-86a6-3b2691b85bba",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {
          "download": true
        }
      },
      "typeVersion": 1,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "08e492f8-b969-4de2-b207-17fcd3cb8787",
      "name": "If Message contains a File",
      "type": "n8n-nodes-base.if",
      "position": [
        1160,
        520
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "9b876834-1a86-48f1-9890-df60c739c91c",
              "operator": {
                "type": "object",
                "operation": "exists",
                "singleValue": true
              },
              "leftValue": "={{ $json.message.document }}",
              "rightValue": ""
            }
          ]
        }
      },
      "typeVersion": 2,
      "notes": "This if node performs automated tasks as part of the workflow...

Output:
The node 'On new Telegram Message' (type: n8n-nodes-base.telegramTrigger) 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": {
  "telegramApi": {
    "id": "EO2PA74ehePPYVFU",
    "name": "Telegram Notification Bot"
  }
}
```

**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 'On new Telegram Message' node.


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

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

Workflow JSON:
{
  "id": "dgBdnnnY0622JwGy",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "e205a1ba-9606-457f-9a2f-d433766b3786",
      "name": "Gmail Get Email",
      "type": "n8n-nodes-base.gmail",
      "position": [
        60,
        840
      ],
      "webhookId": "c8979b0a-2ec3-484d-a11b-eac321cc0642",
      "parameters": {
        "filters": {
          "q": "=before:{{ $now.minus(14 * $('Increment Loop Var').first().json.page, 'days').format('yyyy/MM/dd') }} after: {{ $now.minus(14 * ($('Increment Loop Var').first().json.page + 1), 'days').format('yyyy/MM/dd') }} -label:n8n-skipped",
          "includeSpamTrash": false
        },
        "operation": "getAll",
        "returnAll": true
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "jlMSfpSUYNYbMUpo",
          "name": "mr.abizareyhan@gmail.com"
        }
      },
      "notesInFlow": true,
      "typeVersion": 2.1,
      "alwaysOutputData": false,
      "notes": "This gmail node performs automated tasks as part of the workflow."
    },
    {
      "id": "380f6e02-7f74-44e4-9229-4784f2f0c66f",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -600,
        965
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "8acc6bc1-c82e-4c1c-a3b0-dd6cb75cf8c3",
      "name": "Google Gemini Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        308,
        1060
      ],
      "parameters": {
        "options": {},
        "modelName": "models/gemini-1.5-flash"
      },
      "credentials": {
        "googlePalmApi": {
          "id": "42fqm71hBhyrAZHp",
          "name": "Google Gemini(PaLM) Api account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatGoogleGemini node perfor...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "id": "LPQsiqt476n7ne7f",
  "meta": {
    "instanceId": "workflow-af1a6c9c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.777057",
    "updatedAt": "2025-09-29T07:07:57.777076",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "e-mail Chatbot with both semantic and structured RAG, using Telegram and Pgvector",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f0707b32-4d10-457c-9c5e-d120123da4cb",
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        -180,
        180
      ],
      "webhookId": "1ac710ec-9d76-432e-9cbe-c569db85363f",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {
          "chatIds": "6865163996"
        }
      },
      "credentials": {
        "telegramApi": {
          "id": "ODwnm0QOyG3qSae4",
          "name": "Telegram mailsearch_plaintext_bot"
        }
      },
      "typeVersion": 1.2,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "2ed04863-6ff8-4770-ad1a-1cab65ac7233",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        1376,
        180
      ],
      "parameters": {
        "options": {
          "reset": false
        }
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "063ee7b6-2caf-43c1-a4df-f61e8ad52f79",
      "name": "Came from Telegram?",
      "type": "n8n-nodes-base.if",
      "position": [
        936,
        280
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": ""...

Output:
In node 'Sticky Note2', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $node.NonExistentNode.json.data }}`
**Original Value**: `## IMPORTANT
For this step to work, you must download my other template *Translate questions about e-mails into SQL queries and run them*.`

**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 Note2' parameter 'content'.


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

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

Workflow JSON:
{
  "id": "fa2TGWrY9rPurC30",
  "meta": {
    "instanceId": "workflow-0129fe7d",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.738134",
    "updatedAt": "2025-09-29T07:07:57.744488",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Agent Access Control Template",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "77771654-bfb9-4c34-b644-d4d6eeb15d37",
      "name": "Simple Memory",
      "type": "n8n-nodes-base.noOp",
      "position": [
        560,
        260
      ],
      "parameters": {
        "sessionKey": "YOUR_CREDENTIAL_HERE",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3,
      "notes": "This memoryBufferWindow node performs automated tasks as part of the workflow."
    },
    {
      "id": "f1ef483e-4f84-40c7-957d-191a54ffb80e",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        360,
        260
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o",
          "cachedResultName": "gpt-4o"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "X7Jf0zECd3IkQdSw",
          "name": "OpenAi (octionicsolutions)"
        }
      },
      "typeVersion": 1.2,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "c6ba00c9-8ca2-4cf0-9e2c-24ead9eb7c1b",
      "name": "Check permissions",
      "type": "n8n-nodes-base.noOp",
      "position": [
        960,
        260
      ],
      "parameters": {
        "code": {
          "supplyData": {
            "code": "const { DynamicTool } = require(\"@langchain/core/tools\");\nconst connectedTools = await this.getInputConnectionData('ai_tool',...

Output:
The node 'Telegram Trigger' (type: n8n-nodes-base.telegramTrigger) 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": {
  "telegramApi": {
    "id": "3paV9xW2WWlusvsq",
    "name": "octionictest_bot"
  }
}
```

**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 'Telegram Trigger' node.


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

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

Workflow JSON:
{
  "id": "heyKyETy1uK0xoX4",
  "meta": {
    "instanceId": "workflow-b8bf4b6a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.760319",
    "updatedAt": "2025-09-29T07:07:57.760332",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Optimize Prompt",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "a58be0f5-d11d-4bec-bd8c-0c3a7325b22b",
      "name": "When Executed by Another Workflow",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        -1880,
        820
      ],
      "parameters": {
        "inputSource": "passthrough"
      },
      "typeVersion": 1.1,
      "notes": "This executeWorkflowTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "67fe408f-e889-4eeb-9e48-f60a579c69f0",
      "name": "AI Agent",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -1600,
        720
      ],
      "parameters": {
        "text": "={{ $json.query }}",
        "options": {
          "systemMessage": "Given the user's initial prompt below, please enhance it. Start with a clear, precise instruction at the beginning. Include specific details about the desired context, outcome, length, format, and style. Provide examples of the desired output format, if applicable. Use appropriate leading words or phrases to guide the desired output, especially for code generation. Avoid any vague or imprecise language. Rather than only stating what not to do, provide guidance on what should be done instead. Ensure the revised prompt remains true to the user's original intent. Do not provide examples of desired prompt format, only describe it. Format your response in markdown."
        },
        "promptType": "define",
        "hasOutputParser": true
      },
      "typeVersion": 1.7,
     ...

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: Timeout Configuration

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

Workflow JSON:
{
  "id": "hiCTcf6srJl3Xsxh",
  "meta": {
    "instanceId": "workflow-81cf9084",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.840337",
    "updatedAt": "2025-09-29T07:07:57.840354",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Auto-create and publish AI social videos with Telegram, GPT-4 and Blotato",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "b8a41b63-8c48-4964-befe-b949f3e9b755",
      "name": "Upload Video to Blotato",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2580,
        920
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "url",
              "value": "={{ $('Append Video Data to Google Sheet').item.json['url '] }}"
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "blotato-api-key"
            }
          ]
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "ac7a8bf1-b9ec-4a25-8c14-6d90abbc5568",
      "name": "Post to Instagram",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        2800,
        120
      ],
      "parameters": {
        "url": "{{ $env.WEBHOOK_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n  \"post\": {\n    \"accountId\": \"{{ $('Assign Platform IDs for Blotato').item.json.instagram_id }}\",\n    \"target\": {\n      \"targetType\": \"instagram\"\n    },\n    \"content\": {\n      \"text\": \"{{ $('Append Video Data to Googl...

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: Timeout Configuration

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

Workflow JSON:
{
  "id": "kjyWJWfDlyXkKL3m",
  "meta": {
    "instanceId": "workflow-b8222634",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.784137",
    "updatedAt": "2025-09-29T07:07:57.784158",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\u2728\ud83d\udd2a Advanced AI Powered Document Parsing & Text Extraction with Llama Parse",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "ea7670da-896e-4b9c-b0c2-b3a3dbb6f88f",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -2320,
        80
      ],
      "webhookId": "a9668054-5bd3-427d-8f18-932436441e42",
      "parameters": {
        "path": "parse",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "2c445d40-5d8b-469e-811e-7423f57ba054",
      "name": "Gmail",
      "type": "n8n-nodes-base.gmail",
      "position": [
        -2040,
        -1260
      ],
      "webhookId": "344de9dc-4062-4552-ae29-1e9150322cdb",
      "parameters": {
        "limit": 28,
        "filters": {
          "q": "has:attachment",
          "sender": " joe@example.com"
        },
        "operation": "getAll"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "1xpVDEQ1yx8gV022",
          "name": "Gmail account"
        }
      },
      "typeVersion": 2.1,
      "notes": "This gmail node performs automated tasks as part of the workflow."
    },
    {
      "id": "f321e1d3-24ba-4623-bb31-93c7f6389aa9",
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "position": [
        -2360,
        -1260
      ],
      "parameters": {
        "filters": {},
        "pollTimes": {
          "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.


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": "knmxcsujuHmViJl4",
  "meta": {
    "instanceId": "workflow-cd2ee5c6",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.779992",
    "updatedAt": "2025-09-29T07:07:57.780004",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Online Marketing Weekly Report",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f145b442-3036-4769-b7ad-62c97fa5d662",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -1580,
        -220
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "weeks",
              "triggerAtDay": [
                1
              ],
              "triggerAtHour": 7
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "9b25dfe7-cabe-4051-8d03-5f9b1f42621a",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -1380,
        120
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "niikB3HA4fT5WAqt",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "f04d67a6-fb37-434d-8fd7-988db33f8cde",
      "name": "Google_Ads",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -400,
        120
      ],
      "parameters": {
        "name": "Google_Ads",
        "workflowId": {
          "__rl": true,
          "mode": "list",
          "value": "nRGs7Ogv7eU1mJQl",
          "cachedResultName": "Go...

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: Timeout Configuration

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

Workflow JSON:
{
  "id": "mOcaSIUAvpt3QjQ1",
  "meta": {
    "instanceId": "workflow-18604b9c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.836082",
    "updatedAt": "2025-09-29T07:07:57.836094",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\ud83c\udf10 Confluence Page AI Powered Chatbot",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "trigger-f73553a3",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        100,
        100
      ],
      "parameters": {}
    },
    {
      "id": "f4761e1a-6430-4b3d-97f9-b91743e02ea6",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        80,
        -340
      ],
      "parameters": {
        "color": 7,
        "width": 633,
        "height": 974,
        "content": "## Confluence\n{{ $env.API_BASE_URL }}\n{{ $env.API_BASE_URL }}\n{{ $env.WEBHOOK_URL }}\n\nSupplying basic auth headers\nYou can construct and send basic auth headers yourself, including a base64-encoded string that contains your Atlassian account email and API token.\n\nTo use basic auth headers, perform the following steps:\n\nGenerate an API Token for your Atlassian Account: {{ $env.API_BASE_URL }}\nBuild a string of the form your_email@domain.com:your_user_api_token.\nYou'll need to encode your authorization credentials to Base64 encoded. You can do this locally:\nLinux/Unix/MacOS:\n\nCopy\n```\necho -n your_email@domain.com:your_user_api_token | base64\n```\nWindows 7 and later, using Microsoft Powershell:\n\nCopy\n```\n$Text = \u2018your_email@domain.com:your_user_api_token\u2019\n$Bytes = [System.Text.Encoding]::UTF8.GetBytes($Text)\n$EncodedText = [Convert]::ToBase64String($Bytes)\n$EncodedText\n```\nSupply an Authorization...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "id": "02GdRzvsuHmSSgBw",
  "meta": {
    "instanceId": "workflow-1a1628b0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.865016",
    "updatedAt": "2025-09-29T07:07:57.865028",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "#\ufe0f\u20e3Nostr #damus AI Powered Reporting + Gmail + Telegram",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "e9c4c7bf-0cce-456e-9b95-726669e4b260",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -500,
        -60
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "b8f57e15-8a6e-4a29-a6e8-745bebbd1f44",
      "name": "Get HTML",
      "type": "n8n-nodes-base.markdown",
      "position": [
        880,
        -840
      ],
      "parameters": {
        "mode": "markdownToHtml",
        "options": {},
        "markdown": "={{ $json.text }}"
      },
      "typeVersion": 1,
      "notes": "This markdown node performs automated tasks as part of the workflow."
    },
    {
      "id": "8b212119-9b69-449c-8a3b-4fdc5b085f30",
      "name": "Gmail Themes",
      "type": "n8n-nodes-base.gmail",
      "position": [
        1080,
        -840
      ],
      "webhookId": "e07f9378-bfa5-48ac-88fd-0ef88a725ede",
      "parameters": {
        "sendTo": "joe@example.com",
        "message": "={{ $json.data }}",
        "options": {
          "appendAttribution": false
        },
        "subject": "#damus"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "1xpVDEQ1yx8gV022",
          "name": "Gmail account"
        }
      },
      "typeVersion": 2.1,
      "notes": "This gmail node performs autom...

Output:
The node 'gemini-2.0-flash-lite-preview' (type: n8n-nodes-base.noOp) requires credentials but the 'credentials' configuration is missing.

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

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "googlePalmApi": {
    "id": "L9UNQHflYlyF9Ngd",
    "name": "Google Gemini(PaLM) Api 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 'gemini-2.0-flash-lite-preview' 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:
{
  "id": "o4sdVtTrkuZXDATf",
  "meta": {
    "instanceId": "workflow-e90dc8c3",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.894316",
    "updatedAt": "2025-09-29T07:07:57.894333",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\u2728\ud83d\ude03Automated Workflow Backups to Google Drive",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "f3eba5f7-534e-4eaa-ac84-850d51ff2936",
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        620,
        -140
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "383e4bed-38ec-4b2f-890c-9b0d9cda8e11",
      "name": "Loop Over Items",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        1140,
        340
      ],
      "parameters": {
        "options": {
          "reset": false
        }
      },
      "typeVersion": 3,
      "notes": "This splitInBatches node performs automated tasks as part of the workflow."
    },
    {
      "id": "38c4c909-fa18-4fa3-abf5-6b9bd2d46718",
      "name": "Every Day",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        620,
        80
      ],
      "parameters": {
        "rule": {
          "interval": [
            {}
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "67f62b6e-fe37-4638-89ce-9fe1de041282",
      "name": "Create Folder with DateTime Stamp",
      "type": "n8n-nodes-base.googleDrive",
      "position": [
        1220,
        -40
      ],
      "parameters": {
        "name": "=n8n-Workflow-Backups-{{ $json....

Output:
In node 'Save JSON File to Google Drive Folder', the parameter 'name' contains an expression that references undefined data.

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

**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 'Save JSON File to Google Drive Folder' parameter 'name'.


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

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

Workflow JSON:
{
  "id": "o8HjmolfMilbaEkk",
  "meta": {
    "instanceId": "workflow-cce85af4",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.865247",
    "updatedAt": "2025-09-29T07:07:57.865254",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Telegram echo-bot",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5c7c9e78-60d0-4f6a-929a-a4e77f5e0851",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1000,
        120
      ],
      "parameters": {
        "width": 727,
        "height": 391,
        "content": "## This is a workflow for a Telegram-echo bot\n1. Add your Telegram bot credentials for both nodes\n2. Activate the workflow\n3. Send something to the bot (i.e. a message, a forwarded message, sticker, emoji, voice, file, an image...)\n4. Second node will fetch the incoming JSON object, format it and send back\n\n#### This bot is useful for debugging and learning purposes of the Telegram platform"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "9f64943e-35a4-4d9f-a77e-ff76cae8bb84",
      "name": "Listen for incoming events",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        1040,
        340
      ],
      "webhookId": "322dce18-f93e-4f86-b9b1-3305519b7834",
      "parameters": {
        "updates": [
          "*"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "{{ $credentials.telegramApi.id }}",
          "name": "Telegram sdfsdfsdfsdfsfd_bot"
        }
      },
      "typeVersion": 1,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "5b890...

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: Timeout Configuration

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

Workflow JSON:
{
  "id": "okjjim5PVb2dZUgg",
  "meta": {
    "instanceId": "workflow-758d6c73",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.899081",
    "updatedAt": "2025-09-29T07:07:57.899097",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "FetchGithubIssues",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "2f3cac64-7326-471d-8f6a-1677a4ff5a6d",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -540,
        -560
      ],
      "parameters": {
        "color": 5,
        "content": "### Get Github Issues HTTP Request \n- Edit the OWNER and REPO NAME in the respective fields\n- The request is configured with query parameters of *state*, *since* and *labels*"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "13809408-63f3-4161-87f2-c5d950274aa9",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -260,
        -560
      ],
      "parameters": {
        "color": 3,
        "width": 180,
        "content": "### Extract Fields\nExtract fields like title, comments, created_at, etc from the github api response"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "3df26230-c2b0-44d5-98da-cccbca493c8f",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -40,
        -560
      ],
      "parameters": {
        "color": 3,
        "width": 180,
        "content": "### Filter on Fields\nFilter issues based on number of comments"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as 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.


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

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

Workflow JSON:
{
  "id": "p7xESnT1xMZD2hRk",
  "meta": {
    "instanceId": "workflow-5c1b28ff",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.914389",
    "updatedAt": "2025-09-29T07:07:57.914409",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\ud83e\udde0 Give Your AI Agent Chatbot Long Term Memory Tools Router",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "d5947a9d-bad4-4db7-8cdb-dc277928565a",
      "name": "When Executed by Another Workflow",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        320,
        -80
      ],
      "parameters": {
        "inputSource": "passthrough"
      },
      "typeVersion": 1.1,
      "notes": "This executeWorkflowTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "c9e9715d-c691-4516-9e0c-cf393a18d814",
      "name": "Save Long Term Memories",
      "type": "n8n-nodes-base.googleDocs",
      "position": [
        1020,
        -80
      ],
      "parameters": {
        "actionsUi": {
          "actionFields": [
            {
              "text": "={\n  \"date\": \"{{ $now }}\",\n  \"memory\": \"{{ $json.query }}\"\n},\n",
              "action": "insert"
            }
          ]
        },
        "operation": "update",
        "documentURL": "{{ $env.BASE_URL }}"
      },
      "credentials": {
        "googleDocsOAuth2Api": {
          "id": "YWEHuG28zOt532MQ",
          "name": "Google Docs account"
        }
      },
      "typeVersion": 2,
      "notes": "This googleDocs node performs automated tasks as part of the workflow."
    },
    {
      "id": "306272bf-e264-4cfb-b8b6-8c0af1de3f14",
      "name": "Saved response",
      "type": "n8n-nodes-base.set",
      "position": [
        1200,
        -80
      ],
      "parameters": {
       ...

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: Syntax Error

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

Workflow JSON:
{
  "id": "tHgDFmFyuj6DnP6l"
  "meta": {
    "instanceId": "workflow-e1840942",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.923526",
    "updatedAt": "2025-09-29T07:07:57.923541",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "\ud83c\udfa6\ud83d\udc8cAdvanced YouTube RSS Feed Buddy for Your Favorite Channels",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "ab1db660-96d6-402c-b6e8-8c4d278577d1",
      "name": "On form submission",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        60,
        -220
      ],
      "webhookId": "f6b3bbf7-b6e9-4ade-add4-12004d70b61c",
      "parameters": {
        "options": {
          "appendAttribution": false
        },
        "formTitle": "RSS Feed for YouTube Channels",
        "formFields": {
          "values": [
            {
              "fieldType": "textarea",
              "fieldLabel": "YouTube Channel Ids",
              "placeholder": "[ \"UCMcoud_ZW7cfxeIugBflSBw\", \"UCtevzRsHEKhs-RK8pAqwSyQ\" ]"
            }
          ]
        },
        "responseMode": "lastNode",
        "formDescription": "Create RSS Feeds for Your Favorite YouTube Channels"
      },
      "typeVersion": 2.2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "6ea8d71f-a5f8-46d5-bf51-20df75ec6202",
      "name": "Create RSS Feed URLs1",
      "type": "n8n-nodes-base.set",
      "position": [
        60,
        420
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "8159d367-513c-406b-8ad7-36f65c2e6512",
              "name": "rss_feed_url",
              "type": "string",
              "value": "={{ $env.WEBHOOK_URL }}{{ $json.youtube_channel_id...

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:
{
  "id": "wi2ZWKN9XPR0jkvn",
  "meta": {
    "instanceId": "workflow-e9ffa94b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.965895",
    "updatedAt": "2025-09-29T07:07:57.965949",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "OpenSea AI-Powered Insights via Telegram",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "0b6ec133-7023-4c6a-ae53-78168211545c",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        840,
        140
      ],
      "webhookId": "befa3e52-7b57-4832-9f88-b2c430244595",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "787a9e8d-e67d-4947-90d1-8e3284de7b39",
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        840,
        -160
      ],
      "webhookId": "f9267d32-3860-4f02-99b3-493c4cac36ed",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "typeVersion": 1.1,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "2e10802a-48d7-4b82-afe0-b9e5f93498bf",
      "name": "Adds SessionId",
      "type": "n8n-nodes-base.set",
      "position": [
        1160,
        -160
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "b5c25cd4-226b-4778-863f-79b13b4a5202",
              "name": "sessionId",
              "type": "string",
              "value": "={{ $json.message.chat.id }}"
            }
          ]
        },
        "includeOtherFields": true
...

Output:
The node 'Telegram Trigger' (type: n8n-nodes-base.telegramTrigger) 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": {
  "telegramApi": {
    "id": "R3vpGq0SURbvEw2Z",
    "name": "Telegram account"
  }
}
```

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


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

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

Workflow JSON:
{
  "id": "wng5xcxlYA6jFS6n",
  "meta": {
    "instanceId": "workflow-c412b56b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.919173",
    "updatedAt": "2025-09-29T07:07:57.919199",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "MAIA - Health Check",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "10335465-853d-47ea-aad7-34460c741b74",
      "name": "No Operation, do nothing",
      "type": "n8n-nodes-base.noOp",
      "position": [
        860,
        -20
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This noOp node performs automated tasks as part of the workflow."
    },
    {
      "id": "ea7771ba-3d35-423a-9813-2a65448a15fc",
      "name": "Telegram",
      "type": "n8n-nodes-base.telegram",
      "position": [
        860,
        160
      ],
      "webhookId": "6c02772a-8f40-4d9b-8fe5-220aac63c34e",
      "parameters": {
        "text": "=Health Check :  {{ $json.URLS }}\n\n{{ $json.error.code }}",
        "chatId": "1548053076",
        "additionalFields": {
          "appendAttribution": false
        }
      },
      "credentials": {
        "telegramApi": {
          "id": "QYefc34gGshZQURo",
          "name": "Telegram account"
        }
      },
      "typeVersion": 1.2,
      "notes": "This telegram node performs automated tasks as part of the workflow."
    },
    {
      "id": "bae03dc7-e35b-4760-8de8-151d2d97391b",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        0,
        0
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes"
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as pa...

Output:
The workflow has a broken data flow. The node 'ea7771ba-3d35-423a-9813-2a65448a15fc' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'ea7771ba-3d35-423a-9813-2a65448a15fc'.

**Impact**: Data from 'ea7771ba-3d35-423a-9813-2a65448a15fc' 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 'ea7771ba-3d35-423a-9813-2a65448a15fc' 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": {
  "ea7771ba-3d35-423a-9813-2a65448a15fc": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'ea7771ba-3d35-423a-9813-2a65448a15fc' to the workflow.


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

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

Workflow JSON:
{
  "id": "xe9sXQUc7yW8P8im",
  "meta": {
    "instanceId": "workflow-f1e67b4f",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:57.987586",
    "updatedAt": "2025-09-29T07:07:57.987606",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Meeting booked - to newsletter and CRM",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "715f9c0b-58a6-46b9-b732-334cc2fb3a60",
      "name": "Split Attendees",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        -460,
        -140
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "attendees"
      },
      "typeVersion": 1,
      "notes": "This splitOut node performs automated tasks as part of the workflow."
    },
    {
      "id": "171ed51e-6277-46d3-9037-8b2722ca06d0",
      "name": "Add users",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        200,
        -140
      ],
      "parameters": {
        "columns": {
          "value": {
            "title": "={{ $('on New Booking').item.json.eventTitle }}",
            "length": "={{ $('on New Booking').item.json.length }}",
            "timeZone": "={{ $json.timeZone }}",
            "createdAt": "={{ $('on New Booking').item.json.createdAt }}",
            "attendeeName": "={{ $json.name }}",
            "meetingStart": "={{ $('on New Booking').item.json.startTime }}",
            "attendeeEmail": "={{ $json.email }}"
          },
          "schema": [
            {
              "id": "createdAt",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "createdAt",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "ti...

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

Remove the trailing comma before the closing brace.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "9320d08a-4868-4103-abdf-3f8f54a7a0a0",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        0,
        0
      ],
      "webhookId": "9024e29e-9080-4cf5-9a6b-0d918468f195",
      "parameters": {
        "path": "ytube",
        "options": {},
        "httpMethod": "POST",
        "responseMode": "responseNode"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "a5cc8922-8124-4269-9cfd-e891b29cc2b7",
      "name": "YouTube Transcript",
      "type": "n8n-nodes-youtube-transcription.youtubeTranscripter",
      "position": [
        800,
        0
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This youtubeTranscripter node performs automated tasks as part of the workflow."
    },
    {
      "id": "ff3c0fd1-36d8-4d64-b405-0600efd4d93b",
      "name": "Split Out",
      "type": "n8n-nodes-base.splitOut",
      "position": [
        200,
        260
      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "transcript"
      },
      "typeVersion": 1,
      "notes": "This splitOut node performs automated tasks as part of the workflow."
    },
    {
      "id": "423276e0-81bf-487a-bbdd-26e9b84fa755",
      "name": "Respond to Webhook",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1200,
        140
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This respondToWebhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "27344649-8029-48ae-867b-7363d904fc59",
      "name": "Telegram",
      "type": "n8n-nodes-base.telegram",
      "position": [
        1200,
        380
      ],
      "parameters": {
        "text": "={{ $json.title }}\n{{ $json.youtubeUrl }}",
        "additionalFields": {
          "parse_mode": "HTML",
          "appendAttributio...

Output:
The workflow has a broken data flow. The node '27344649-8029-48ae-867b-7363d904fc59' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for '27344649-8029-48ae-867b-7363d904fc59'.

**Impact**: Data from '27344649-8029-48ae-867b-7363d904fc59' 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 '27344649-8029-48ae-867b-7363d904fc59' 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": {
  "27344649-8029-48ae-867b-7363d904fc59": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```


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:
{
  "name": "Academic Assistant Chatbot (Telegram + OpenAI)",
  "nodes": [
    {
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "id": "20a2d959-5412-447b-a2c4-7736b6b758b3",
      "name": "Telegram Trigger",
      "position": [
        256,
        208
      ],
      "type": "n8n-nodes-base.telegramTrigger",
      "typeVersion": 1.1,
      "webhookId": "5757ba5b-b427-4af8-a23b-7527a0f01ae8",
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "parameters": {
        "options": {}
      },
      "id": "8b30f207-8204-4548-8f51-38c387d98ae9",
      "name": "OpenAI Chat Model",
      "position": [
        656,
        208
      ],
      "type": "n8n-nodes-base.noOp",
      "typeVersion": 1.1,
      "credentials": {
        "openAiApi": {
          "id": "YOUR_OPENAI_CREDENTIAL_ID_HERE",
          "name": "OpenAI Account"
        }
      },
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $('Telegram Trigger').item.json.message.text }}",
        "options": {
          "systemMessage": "You are a helpful and knowledgeable AI academic assistant. Your goal is to assist students with their assignments, studies, and general academic inquiries. Provide explanations, study tips, help with research, clarify concepts, and offer guidance on academic tasks. Be encouraging, precise, and polite. Always ensure your responses are relevant to academic support."
        }
      },
      "id": "68303b67-2203-41e8-b370-220d884d2945",
      "name": "Academic Assistant AI Agent",
      "position": [
        912,
        208
      ],
      "type": "n8n-nodes-base.noOp",
      "typeVersion": 1.7,
      "notes": "This agent node performs automated tasks as part of the workflow."
    },
    {
      "parameters": {
        "chatId": "={{ $...

Output:
The node 'Send Telegram Response' (type: n8n-nodes-base.telegram) 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": {
  "telegramApi": {
    "id": "YOUR_TELEGRAM_CREDENTIAL_ID_HERE",
    "name": "Telegram 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 'Send Telegram Response' node.


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

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

Workflow JSON:
{
  "id": "ODZpSQqCxkISEqv8",
  "meta": {
    "instanceId": "workflow-cd57b428",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:58.039878",
    "updatedAt": "2025-09-29T07:07:58.039947",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "WooCommerce AI Chatbot Workflow for Post-Sales Support",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "25024dde-431b-4dad-b5ed-9be77cdf3db2",
      "name": "When chat message received",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -860,
        420
      ],
      "webhookId": "bb9b597a-25ed-43de-9ebb-14f166af789b",
      "parameters": {
        "mode": "webhook",
        "public": true,
        "options": {
          "responseMode": "responseNode"
        }
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "96139b63-75aa-4d16-91b1-2fe0ca624137",
      "name": "Simple Memory",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -520,
        720
      ],
      "parameters": {},
      "typeVersion": 1.3,
      "notes": "This memoryBufferWindow node performs automated tasks as part of the workflow."
    },
    {
      "id": "f7901f97-50c5-4f56-bae3-21c575aa22cc",
      "name": "get_order",
      "type": "n8n-nodes-base.wooCommerceTool",
      "position": [
        80,
        600
      ],
      "parameters": {
        "orderId": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Order_ID', `Order Details Retrieval Process:\n1. Request Order Number\n   - Explicitly ask customer for the complete order number\n\n2. Identity Verification\n   - Ask for the email address associated with the order\n   - Strictly verify that the provided email matches the order record\n   - If email does NOT...

Output:
The workflow has a broken data flow. The node '7ac0573f-fcc0-426e-b412-1f4a1e38b9ee' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for '7ac0573f-fcc0-426e-b412-1f4a1e38b9ee'.

**Impact**: Data from '7ac0573f-fcc0-426e-b412-1f4a1e38b9ee' 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 '7ac0573f-fcc0-426e-b412-1f4a1e38b9ee' 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": {
  "7ac0573f-fcc0-426e-b412-1f4a1e38b9ee": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect '7ac0573f-fcc0-426e-b412-1f4a1e38b9ee' to the workflow.


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:
{
  "name": "Scalable Webhook Orchestrator",
  "nodes": [
    {
      "id": "b0a9f7f1-1db8-4d0e-bca4-7f6c4f75a001",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        200,
        300
      ],
      "webhookId": "c1d2e3f4-5a6b-7c8d-9e0f-abc123456901",
      "parameters": {
        "path": "template/scalable-orchestrator",
        "httpMethod": "POST",
        "responseMode": "responseNode",
        "options": {}
      },
      "typeVersion": 2
    },
    {
      "id": "a7f2c1b0-8d64-4f8a-9f67-63b1c4d50a02",
      "name": "Notas & Testes",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -120,
        80
      ],
      "parameters": {
        "color": 7,
        "width": 720,
        "height": 380,
        "content": "## Template: Orquestrador Webhook Escal\u00e1vel\n\n- Objetivo: Roteia a\u00e7\u00f5es (ping/process) e responde r\u00e1pido.\n- Teste r\u00e1pido (Terminal):\n```bash\ncurl -X POST http://<SEU_N8N>/webhook/template/scalable-orchestrator \\\n  -H 'Content-Type: application/json' \\\n  -d '{\\\"action\\\":\\\"process\\\",\\\"payload\\\":{\\\"id\\\":1,\\\"text\\\":\\\"ol\u00e1\\\"}}'\n```\n- Produ\u00e7\u00e3o: Troque 'HTTP Service A' para sua API/servi\u00e7o com credenciais.\n- Resili\u00eancia: HTTP possui retry autom\u00e1tico (2x).\n"
      },
      "typeVersion": 1
    },
    {
      "id": "f5a1d0e3-0e64-4c35-8e8f-83e8b6ddaa03",
      "name": "Parse Input",
      "type": "n8n-nodes-base.set",
      "position": [
        460,
        300
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "in_action",
              "name": "action",
              "type": "string",
              "value": "={{ $json.body?.action || 'ping' }}"
            },
            {
              "id": "in_payload",
              "name": "payload",
              "type": "object",
              "value": "={{ $json.body?.payload || {...

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

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

**Impact**: Data from 'Compose Ping' 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 'Compose Ping' 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": {
  "Compose Ping": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'Compose Ping' 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:
{
  "name": "Rapid ETL: HTTP -> Transform -> Deliver",
  "nodes": [
    {
      "id": "mtr-0001",
      "name": "Notas & Testes",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -160,
        80
      ],
      "parameters": {
        "color": 7,
        "width": 760,
        "height": 360,
        "content": "## Template: ETL R\u00e1pido (HTTP \u2192 Transform \u2192 Entregar)\n\n- Objetivo: Ingerir dados de uma API, transformar e enviar em lote.\n- Teste r\u00e1pido: execute manualmente no Editor.\n- Fonte demo: jsonplaceholder.typicode.com/posts.\n- Entrega demo: httpbin.org/post (eco).\n- Produ\u00e7\u00e3o: substitua 'Upsert Endpoint' pelo seu DB/API (Sheets, Postgres, etc.)."
      },
      "typeVersion": 1
    },
    {
      "id": "mtr-0002",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        200,
        280
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "mtr-0003",
      "name": "Fetch Data",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        460,
        280
      ],
      "parameters": {
        "url": "https://jsonplaceholder.typicode.com/posts",
        "method": "GET",
        "options": {}
      },
      "typeVersion": 4.2
    },
    {
      "id": "mtr-0004",
      "name": "Transform",
      "type": "n8n-nodes-base.function",
      "position": [
        720,
        280
      ],
      "parameters": {
        "functionCode": "// Keep top 10 posts and map fields\nconst data = Array.isArray(items[0].json) ? items[0].json : [];\nreturn data.slice(0, 10).map(post => ({ json: { id: post.id, title: post.title, userId: post.userId } }));"
      },
      "typeVersion": 2
    },
    {
      "id": "mtr-0005",
      "name": "Upsert Endpoint",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        980,
        280
      ],
      "parameters": {
        "url": "https://httpbin.org/post",
        "method": "POST",
     ...

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: Data Type Mismatch

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

Workflow JSON:
{
  "id": "WUX0BsRA1dbzTKnl",
  "meta": {
    "instanceId": "workflow-f5133f5a",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:58.116286",
    "updatedAt": "2025-09-29T07:07:58.116319",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Email mailbox as Todoist tasks",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "5b711a67-3d03-4687-a550-0514e2a5d251",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -220,
        100
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This manualTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "5862ae85-d48b-49a6-9c9f-4a682d42af78",
      "name": "Mark As Read",
      "type": "n8n-nodes-base.gmail",
      "position": [
        580,
        -240
      ],
      "webhookId": "b1551d40-6d53-47ec-ad90-0386c04de860",
      "parameters": {
        "messageId": "={{ $json.id }}",
        "operation": "markAsRead"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "UmjYQEDj616cX3UR",
          "name": "Gmail lukp12"
        }
      },
      "typeVersion": 2.1,
      "notes": "This gmail node performs automated tasks as part of the workflow."
    },
    {
      "id": "19655c59-dc43-4d3d-aaa1-a23e0b5c64e2",
      "name": "Star",
      "type": "n8n-nodes-base.gmail",
      "position": [
        780,
        -240
      ],
      "webhookId": "b1551d40-6d53-47ec-ad90-0386c04de860",
      "parameters": {
        "labelIds": [
          "STARRED"
        ],
        "messageId": "={{ $json.id }}",
        "operation": "addLabels"
      },
      "credentials": {
        "gmailOAuth2": {
          "id": "UmjYQEDj616cX3UR",
          "name": "Gmail lukp12"
        }
  ...

Output:
The node 'If Task Not Exist' 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 'If Task Not Exist'.


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

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

Workflow JSON:
{
  "id": "138",
  "name": "Get new time entries from Toggl",
  "nodes": [
    {
      "name": "Toggl",
      "type": "n8n-nodes-base.togglTrigger",
      "position": [
        650,
        250
      ],
      "parameters": {
        "pollTimes": {
          "item": [
            {}
          ]
        }
      },
      "credentials": {
        "togglApi": ""
      },
      "typeVersion": 1,
      "id": "74e70ef6-d3bc-411b-9d7e-7f3d2ca2b523",
      "notes": "This togglTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "error-1ece2d54",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    },
    {
      "parameters": {
        "url": "https://api.example.com/data",
        "method": "GET",
        "options": {}
      },
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        450,
        300
      ]
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3,
    "retryDelay": 1000
  },
  "connections": {},
  "description": "Automated workflow: Get new time entries from Toggl. This workflow processes data and performs automated tasks.",
  "meta": {
    "instanceId": "workflow-01ec6fc1",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:58.160025",
    "updatedAt": "2025-09-29T07:07:58.160043",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Github Trigger",
      "type": "n8n-nodes-base.githubTrigger",
      "position": [
        450,
        300
      ],
      "webhookId": "01518289-14b1-4a45-9d33-39be08f7a544",
      "parameters": {
        "owner": "n8n-io",
        "events": [
          "push",
          "pull_request"
        ],
        "repository": "n8n",
        "authentication": "{{ $credentials.oAuth2 }}",
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "githubOAuth2Api": "GitHub Credentials"
      },
      "typeVersion": 1,
      "id": "1a825fcf-9d63-49fb-ba99-8e3d066678f4",
      "notes": "This githubTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "If Node",
      "type": "n8n-nodes-base.if",
      "position": [
        650,
        300
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$json[\"headers\"][\"x-github-event\"]}}",
              "value2": "push"
            },
            {
              "value1": "={{$json[\"body\"][\"action\"]}}",
              "value2": "opened"
            }
          ]
        },
        "combineOperation": "any"
      },
      "typeVersion": 1,
      "id": "dd55dac5-15b0-4bae-a10a-047d198c0e75",
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "name": "TravisCI",
      "type": "n8n-nodes-base.travisCi",
      "position": [
        850,
        200
      ],
      "parameters": {
        "slug": "={{$json[\"body\"][\"repository\"][\"full_name\"]}}",
        "branch": "=",
        "operation": "trigger",
        "additionalFields": {}
      },
      "credentials": {
        "travisCiApi": "Travis API"
      },
      "typeVersion": 1,
      "id": "cbb734a3-caba-48af-96b4-f351d1416eec",
      "notes": "This travisCi node performs automated tasks as part of the workflow."
    },
    {
      "name": "NoOp",
      "type": "n8n-n...

Output:
The node 'Github Trigger' has a data type mismatch in its parameters.

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

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

**Solutions**:

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

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

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

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

Fix data type conversion in 'Github Trigger'.