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

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        440,
        440
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {}
          ]
        }
      },
      "typeVersion": 1,
      "id": "node-9191b454"
    },
    {
      "name": "Airtable2",
      "type": "n8n-nodes-base.airtable",
      "notes": "Grab our list of chats from Airtable to send a random recipe",
      "position": [
        660,
        440
      ],
      "parameters": {
        "table": "Table 1",
        "operation": "list",
        "application": "your_sheet_id",
        "additionalOptions": {}
      },
      "credentials": {
        "airtableApi": {
          "id": "{{ $credentials.airtableApi.id }}",
          "name": "Airtable account"
        }
      },
      "notesInFlow": true,
      "typeVersion": 1,
      "id": "node-1944ac45"
    },
    {
      "name": "Set",
      "type": "n8n-nodes-base.set",
      "position": [
        860,
        600
      ],
      "parameters": {
        "values": {
          "number": [
            {
              "name": "chatid",
              "value": "={{$node[\"Airtable2\"].json[\"fields\"][\"chatid\"]}}"
            }
          ],
          "string": []
        },
        "options": {}
      },
      "typeVersion": 1,
      "id": "node-2750ed12"
    },
    {
      "name": "Recipe Photo",
      "type": "n8n-nodes-base.telegram",
      "position": [
        1240,
        440
      ],
      "parameters": {
        "file": "={{$node[\"Get recipes from API\"].json[\"recipes\"][0][\"image\"]}}",
        "chatId": "={{$node[\"Set\"].json[\"chatid\"]}}",
        "operation": "sendPhoto",
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "{{ $credentials.telegramApi.id }}",
          "name": "Telegram account"
        }
      },
      "typeVersion": 1,
      "continueOnFail": true,
      "id": "node-fb8d483a"
    },
    {...

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: 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": "4bf26356-9c59-4cee-8eb8-8553b23a172f",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        560,
        -120
      ],
      "parameters": {
        "width": 660,
        "height": 460,
        "content": "![]({{ $env.WEBHOOK_URL }}\n# Daily Cartoon (w/ AI Translate)\n\n### How it works\n- Automates the retrieval of Calvin and Hobbes daily comics.\n- Extracts the comic image URL from the website.\n- Translates comic dialogues to English and Korean(Other Language)\n- Posts the comic and translations to Discord daily.\n\n### Set up steps\n- Estimated setup time: ~10-15 minutes.\n- Use a **Schedule Trigger** to automate the workflow at 9 AM daily.\n- Add nodes for parameter setup, HTTP request, data extraction, and integration with Discord.\n- Add detailed notes to each node in the workflow for easy understanding."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "52d19472-41b4-4d71-874e-064ef9d6f248",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        620,
        380
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 9
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "bcc15f37-c048-4d9a-83cd-367856470095",
      "name": "OpenAI",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1620,
        380
      ],
      "parameters": {
        "text": "Please write the original language and Korean together. \n\nEXAMPLE)\nCalvin: \"YOU'VE NEVER HAD AN OBLIGATION, AN ASSIGNMENT, OR A DEADLINE IN ALL YOUR LIFE! YOU HAVE NO RESPONSIBILITIES AT ALL! IT MUST BE NICE!\" (\ub108\ub294 \ud3c9\uc0dd \ud55c \ubc88\ub3c4 \uc758\ubb34, \u...

Output:
The workflow has a broken data flow. The node 'bcc15f37-c048-4d9a-83cd-367856470095' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'bcc15f37-c048-4d9a-83cd-367856470095'.

**Impact**: Data from 'bcc15f37-c048-4d9a-83cd-367856470095' 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 'bcc15f37-c048-4d9a-83cd-367856470095' 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": {
  "bcc15f37-c048-4d9a-83cd-367856470095": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```

Reconnect 'bcc15f37-c048-4d9a-83cd-367856470095' 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:
{
  "nodes": [
    {
      "id": "6d908a58-8893-48da-8311-8c28ebd8ec62",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -520,
        -280
      ],
      "parameters": {
        "color": 7,
        "width": 1160,
        "height": 120,
        "content": "**Summarize YouTube videos**\n\nThis project automates the summarization of YouTube videos, transforming lengthy content into concise, actionable insights. By leveraging AI and workflow automation, it extracts video transcripts, analyzes key points, and generates summaries, saving time for content creators, researchers, and professionals. Perfect for staying informed, conducting research, or repurposing video content efficiently."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "98de613a-1b1e-4b46-915f-7bebcfd6a931",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -540,
        120
      ],
      "parameters": {
        "width": 230,
        "height": 80,
        "content": "Add the full YouTube URL. \u261d\ufe0f\nYou can change this input to a webhook or anything else."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "064208d4-52c3-46a9-9f9f-d37258189d06",
      "name": "Request YouTube Transcript",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -200,
        -20
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n \"startUrls\": [\n \"{{ $json['Full URL'] }}\"\n ]\n}",
        "sendBody": true,
        "specifyBody": "json"
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "ba5e52fd-18b1-4232-961c-b53b01e2...

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

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

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

**Solutions**:

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

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

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

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

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

Add validation for empty or null input data.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "9cc26a42-eb43-40c4-b507-cbaf187a5e15",
      "name": "Get New Message",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        1120,
        500
      ],
      "webhookId": "464f0a75-56d1-402f-8b12-b358452e9736",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "rI0zyfIYVIyXt2fL",
          "name": "Telegram Club"
        }
      },
      "typeVersion": 1.1,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "098b6fcf-7cb6-4730-8892-949fedc946b3",
      "name": "OPENAI - Create thread",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1740,
        640
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "sendHeaders": true,
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "headerParameters": {
          "parameters": [
            {
              "name": "OpenAI-Beta",
              "value": "assistants=v2"
            }
          ]
        },
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "credentials": {
        "openAiApi": {
          "id": "zJhr5piyEwVnWtaI",
          "name": "OpenAi club"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "fa157f8c-b776-4b20-bfaf-c17460383505",
      "name": "Create User",
      "type": "n8n-nodes-base.supabase",
      "position": [
        1900,
        640
      ],
      "parameters": {
        "tableId": "telegram_users",
        "fieldsUi": {
          "fieldValues": [
            {
              "fieldId": "telegram_id",
              "fieldValue": "={{ $('Get New Message').item.json.message.chat.id }}"
            },...

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": "VU0kmvnWzctSFm2M",
  "meta": {
    "instanceId": "workflow-fed4e900",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.736268",
    "updatedAt": "2025-09-29T07:07:46.736294",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Convert Parquet, Avro, ORC & Feather via ParquetReader to JSON",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "651a10dc-1c91-4957-bcdd-3e55d7328f04",
      "name": "Send to Parquet API",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1100,
        440
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {
          "bodyContentType": "multipart-form-data"
        },
        "requestMethod": "POST",
        "jsonParameters": true,
        "sendBinaryData": true,
        "binaryPropertyName": "=file0"
      },
      "typeVersion": 1,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "42a7e623-ca11-4d38-94bb-cfb48d021a5c",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "notes": "Example trigger flow:\n\ncurl -X POST {{ $env.WEBHOOK_URL }} \\\n  -F \"file=@converted.parquet\"",
      "position": [
        900,
        440
      ],
      "webhookId": "0b1223c9-c117-45f9-9931-909f2db28955",
      "parameters": {
        "path": "convert",
        "options": {
          "binaryPropertyName": "file"
        },
        "httpMethod": "POST",
        "responseData": "allEntries",
        "responseMode": "lastNode"
      },
      "notesInFlow": false,
      "typeVersion": 2
    },
    {
      "id": "9b87f027-7ef2-40a7-88d7-a0ae9ef73375",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        0,
        0
      ],
      "parameters...

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: Missing Credentials

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

Workflow JSON:
{
  "meta": {
    "instanceId": "workflow-f4250dab",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.808611",
    "updatedAt": "2025-09-29T07:07:46.808627",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "50695e7f-3334-4124-a46e-1b3819412e26",
      "name": "OpenAI Chat Model",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1260,
        560
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {
          "temperature": 0.1
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "WqzqjezKh8VtxdqA",
          "name": "OpenAi account - Baptiste"
        }
      },
      "typeVersion": 1,
      "notes": "This lmChatOpenAi node performs automated tasks as part of the workflow."
    },
    {
      "id": "2f07481d-3ca4-48ab-a8ff-59e9ab5c6062",
      "name": "Execute Workflow",
      "type": "n8n-nodes-base.executeWorkflow",
      "position": [
        2360,
        280
      ],
      "parameters": {
        "options": {
          "waitForSubWorkflow": true
        },
        "workflowId": {
          "__rl": true,
          "mode": "id",
          "value": "={{ $workflow.id }}"
        }
      },
      "typeVersion": 1.1,
      "notes": "This executeWorkflow node performs automated tasks as part of the workflow."
    },
    {
      "id": "49120164-4ffc-4fe0-8ee3-4ae13bda6c8d",
      "name": "Execute \"Generate a chart\" tool",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "position": [
        1320,
        1140
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This executeWorkflowTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "0fc6eaf9-8521-44ec-987e-73644d0cba79",
      "name": "OpenAI - Generate Chart definition with Structured Output",
      "type": "n8n-nodes-base...

Output:
The node 'OpenAI Chat Model Classifier' (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": "WqzqjezKh8VtxdqA",
    "name": "OpenAi account - Baptiste"
  }
}
```

**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 Classifier' node.


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

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

Workflow JSON:
{
  "id": "YVNJOltj0jMQatGz",
  "meta": {
    "instanceId": "workflow-2b50f791",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.821364",
    "updatedAt": "2025-09-29T07:07:46.821473",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Stripe Payment Order Sync \u2013 Auto Retrieve Customer & Product Purchased",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "90322fe5-5536-41c3-ac08-ea87a856781b",
      "name": "Stripe Trigger on Payment Event",
      "type": "n8n-nodes-base.stripeTrigger",
      "position": [
        0,
        0
      ],
      "webhookId": "e85ac894-bb67-436c-ad39-308a00c8e922",
      "parameters": {
        "events": [
          "checkout.session.completed"
        ]
      },
      "typeVersion": 1,
      "notes": "This stripeTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "3feb0b03-921e-4bfd-8a50-b2b6b47e9497",
      "name": "Extract Session Information",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        300,
        0
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {},
        "sendQuery": true,
        "authentication": "{{ $credentials.predefinedCredentialType }}",
        "queryParameters": {
          "parameters": [
            {
              "name": "expand[]",
              "value": "line_items"
            }
          ]
        },
        "nodeCredentialType": "YOUR_CREDENTIAL_HERE"
      },
      "credentials": {
        "stripeApi": {
          "id": "ClCB0WooGxls3WGM",
          "name": "Stripe Test"
        },
        "httpHeaderAuth": {
          "id": "9UNc6IDuBlNCX6zd",
          "name": "PDF to Text"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks...

Output:
The node 'Stripe Trigger on Payment Event' (type: n8n-nodes-base.stripeTrigger) 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": {
  "stripeApi": {
    "id": "ClCB0WooGxls3WGM",
    "name": "Stripe Test"
  }
}
```

**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 'Stripe Trigger on Payment Event' 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:
{
  "id": "a5tCsfMzJPd8WDUj",
  "meta": {
    "instanceId": "workflow-63902067",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.846118",
    "updatedAt": "2025-09-29T07:07:46.846130",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "line message api demo",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "2bc1cc31-136c-46a4-a789-476e33c76f3d",
      "name": "Line : Reply with token",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -540,
        -460
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n  \"replyToken\": \"{{ $('Webhook from Line Message').item.json.body.events[0].replyToken }}\",\n  \"messages\": [\n    {\n      \"type\": \"text\",\n      \"text\": \"\u6536\u5230\u60a8\u7684\u8a0a\u606f : {{ $('Webhook from Line Message').item.json.body.events[0].message.text }}\"\n    }\n  ]\n}",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth",
        "_injected_number_field": "not_a_number"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "xB2Ip7YKSIDq7BoI",
          "name": "Line n8n demo auth"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "a1d9c986-4712-4d40-955d-40d1b19d74db",
      "name": "Webhook from Line Message",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -1020,
        -440
      ],
      "webhookId": "638c118e-1c98-4491-b6ff-14e2e75380b6",
      "parameters": {
        "path": "638c118e-1c98-4491-b6ff-14e2e75380b6",
        "options...

Output:
The node 'Line : Reply with token' 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 'Line : Reply with token'.


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": "aDPpPIaeM7zfUCdJ",
  "meta": {
    "instanceId": "workflow-3a119cb7",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.841982",
    "updatedAt": "2025-09-29T07:07:46.842002",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "GROQ LLAVA V1.5 7B",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "d831f75e-0385-482c-b2d5-e8da58216f4c",
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        540,
        280
      ],
      "webhookId": "6021108f-f0e8-4d7a-918b-f49baa28ba85",
      "parameters": {
        "updates": [
          "*"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "JLNFgAyYUUyvLhcv",
          "name": "Bot 2"
        }
      },
      "typeVersion": 1.1,
      "notes": "This telegramTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "0fd97c36-3e3d-45a3-929d-975d17baf1fb",
      "name": "Telegram send the text",
      "type": "n8n-nodes-base.telegram",
      "position": [
        1640,
        280
      ],
      "parameters": {
        "text": "={{ $json.choices[0].message.content }}",
        "chatId": "={{ $('Telegram Trigger').item.json.message.chat.id }}",
        "additionalFields": {
          "appendAttribution": false
        }
      },
      "credentials": {
        "telegramApi": {
          "id": "",
          "name": ""
        }
      },
      "typeVersion": 1.2,
      "notes": "This telegram node performs automated tasks as part of the workflow."
    },
    {
      "id": "bd39b29f-e128-4891-bc6a-3eb75de29182",
      "name": "Get only the text",
      "type": "n8n-nodes-base.set",
      "position": [
        1420,
        280
      ],
      "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.

Add rate limiting protection with Wait nodes and retry logic.


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

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

Workflow JSON:
{
  "id": "bPxDenPJ5Ixx0txY",
  "meta": {
    "instanceId": "workflow-5abaccf7",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.863064",
    "updatedAt": "2025-09-29T07:07:46.863078",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Line_Chatbot_Extract_Text_from_Pay_Slip_with_Gemini",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "83f758b4-a80b-4f27-ac13-ee0958ed97f2",
      "name": "Window Buffer Memory",
      "type": "n8n-nodes-base.noOp",
      "position": [
        200,
        320
      ],
      "parameters": {
        "sessionKey": "YOUR_CREDENTIAL_HERE",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3,
      "notes": "This memoryBufferWindow node performs automated tasks as part of the workflow."
    },
    {
      "id": "c41976eb-4a35-4c59-8167-538c651ad7e5",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -200,
        520
      ],
      "parameters": {
        "width": 620,
        "height": 500,
        "content": "## Extract text from image\n**Prompt for Gemini**\nAnalyze image and then return in JSON Response that has the only following value: Status, From, To, Date, Amount"
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "c3eb2420-a503-4039-874c-df3c2799c561",
      "name": "Line: Get Image",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -160,
        660
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {},
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id"...

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: 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": "f3BtfIEQ7lWiXBWQ",
  "meta": {
    "instanceId": "workflow-f5623011",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.912527",
    "updatedAt": "2025-09-29T07:07:46.912540",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Connect Airtable Contacts to telli for Automated AI Voice Call Scheduling",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "9562ed92-f04e-44b8-b2f1-3c9032788826",
      "name": "Airtable Trigger",
      "type": "n8n-nodes-base.airtableTrigger",
      "position": [
        -20,
        0
      ],
      "parameters": {
        "baseId": {
          "__rl": true,
          "mode": "id",
          "value": "appjsUaPrbH6ph7cB"
        },
        "tableId": {
          "__rl": true,
          "mode": "id",
          "value": "tblVXEWTj7dErmNsa"
        },
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "triggerField": "=Created Time",
        "authentication": "{{ $credentials.airtableTokenApi }}",
        "additionalFields": {}
      },
      "credentials": {
        "airtableTokenApi": {
          "id": "fcsJcjY4luV2FD5O",
          "name": "Airtable account"
        }
      },
      "typeVersion": 1,
      "notes": "This airtableTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "d40f78ab-f96f-44eb-a2ac-1b16a66f94cb",
      "name": "Schedule Calls Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        500,
        0
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
        ...

Output:
The workflow has a broken data flow. The node 'b5d4b415-9363-4d2a-8689-4c789177d9c3' is not connected to any subsequent nodes.

**Root Cause**: The connections object is missing the output connections for 'b5d4b415-9363-4d2a-8689-4c789177d9c3'.

**Impact**: Data from 'b5d4b415-9363-4d2a-8689-4c789177d9c3' 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 'b5d4b415-9363-4d2a-8689-4c789177d9c3' 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": {
  "b5d4b415-9363-4d2a-8689-4c789177d9c3": {
    "main": [[{"node": "NextNode", "type": "main", "index": 0}]]
  }
}
```


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": "ghfbOYrOSiQVAbl5",
  "meta": {
    "instanceId": "workflow-d4de3363",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.911524",
    "updatedAt": "2025-09-29T07:07:46.911542",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Chatbot AI",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "6eec6665-eea6-4aaa-8ae5-2fc7bf0c4746",
      "name": "Loading Animation",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -520,
        340
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "body": "={\n    \"chatId\": \"{{ $json.body.events[0].source.userId }}\",\n    \"loadingSeconds\": 60\n}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "raw",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "rawContentType": "application/json",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "PQI3F0ibV3txKWfv",
          "name": "Talking Therapy Line@"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "72ff06e5-e1d8-47e7-be15-888ec9171c72",
      "name": "ReplyMessage - Not supported",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        100,
        760
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "body": "={\n    \"replyToken\":\"{{ $('Line Chatbot').item.json.body.events[0].replyToken }}\",\n    \"messages\":[\n        {\n            \"type\":\"text\",\n            \"text\":\"Currently, the input of image or other type are not supported.\"\n        }\n    ]\n}",
        "method": "POST",
        "...

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: 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": "gqwYlZvL1dwy9W3T",
  "meta": {
    "instanceId": "workflow-ad173541",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.903513",
    "updatedAt": "2025-09-29T07:07:46.903531",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "getBible Query v1.0",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "37e21e75-6f18-45fc-9b74-860c1e095b83",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -880,
        -320
      ],
      "parameters": {
        "width": 780,
        "height": 1720,
        "content": "# GetBible Query Workflow Documentation\n\n## Overview\n\nThe **GetBibleQuery** workflow is a modular and self-standing workflow designed to retrieve scriptures based on provided references. It serves as an intermediary layer that takes in a structured JSON object, extracts the references, and returns the corresponding scriptures in the same format as if they were retrieved directly from the API.\n\nThis workflow is highly adaptable and can be integrated into various projects where scriptural references need to be dynamically fetched.\n\n## JSON Input Structure\n\nThe workflow expects a JSON object with the following parameters:\n\n - References should include the book name, chapter, and verse(s). \n - Multiple verses can be separated by commas (e.g., `John 3:16,18`).\n - Ranges can be specified using a dash (e.g., `John 3:16-18`).\n - The Bible [translation]({{ $env.API_BASE_URL }} to be used.\n - Specifies the API version (v2)\n\n### Example JSON Input:\n\n```json\n{\n  \"references\": [\n      \"1 John 3:16\",\n      \"Jn 3:16\",\n      \"James 3:16\",\n      \"Rom 3:16\"\n  ],\n  \"translation\": \"kjv\",\n  \"version\": \"v2\"\n}\n```\n\n### API Response Format\n\nThe response returned by t...

Output:
The node 'Map API Respons to Result' 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 'Map API Respons to Result'.


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": "i8nBvPOtFYWk5eoq",
  "meta": {
    "instanceId": "workflow-c92ffc68",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:46.908805",
    "updatedAt": "2025-09-29T07:07:46.908823",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Get PDF with JSReport",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "9514b49d-80f3-41d2-bcbc-8fa08e27cb64",
      "name": "Get PDF From JSReport",
      "type": "n8n-nodes-base.httpRequest",
      "notes": "Generating the document in JSReport",
      "position": [
        1040,
        320
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "=   {\n      \"template\": { \"name\" : \"invoice-main\" },\n      \"data\" :{\n    \"number\": \"123\",\n    \"seller\": {\n        \"name\": \"Next Step Webs, Inc.\",\n        \"road\": \"12345 Sunny Road\",\n        \"country\": \"Sunnyville, TX 12345\"\n    },\n    \"buyer\": {\n        \"name\": \"{{ $json[\"buyer name\"] }}\",\n        \"road\": \"{{ $json[\"buyer road\"] }}\",\n        \"country\": \"{{ $json[\"buyer country\"] }}\"\n    },\n    \"items\": [{\n        \"name\": \"{{ $json[\"Item 1 Name\"] }}\",\n        \"price\": {{ $json[\"Item 1 Price\"] }}\n    }, {\n        \"name\": \"{{ $json[\"Item 2 Name\"] }}\",\n        \"price\": {{ $json[\"Item 2 Price\"] }}\n    }]\n}\n   }",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpBasicAuth"
      },
      "credentials": {
        "httpBasicAuth": {
          "id": "oKwHNpbRnChEV8xq",
          "name": "Unnamed credential"
        }
      },
      "notesInFlow": true,
      "typeVersion": 4.2
    },
    {
      "i...

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

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

**Solution**: Add the credentials configuration back to the node:
```json
"credentials": {
  "gmailOAuth2": {
    "id": "N3pxr94UxrQSovu5",
    "name": "Gmail 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 invoice' 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": "iFkGAiVn3yBlykIG",
  "meta": {
    "instanceId": "workflow-53fe686c",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.055153",
    "updatedAt": "2025-09-29T07:07:47.055168",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Chinese Translator",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "3ebfb7f1-b655-405b-8bde-0219fa92d09c",
      "name": "Line Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -260,
        -20
      ],
      "webhookId": "b2b119e6-6de5-4684-9a51-4706a1c20caf",
      "parameters": {
        "path": "cn",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "63ae844f-dfc3-4e8f-97d0-c0ec4be7858f",
      "name": "Line Loading Animation",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        120,
        -20
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "jsonBody": "={\n    \"chatId\": \"{{ $json.body.events[0].source.userId }}\",\n    \"loadingSeconds\": 60\n}",
        "sendBody": true,
        "specifyBody": "json",
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpHeaderAuth"
      },
      "credentials": {
        "httpHeaderAuth": {
          "id": "3IEOzxKOUr6OEXyU",
          "name": "Line @405jtfqs LazyChinese"
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "7e4cc2a0-958c-4111-909c-fba75a428d5e",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "posi...

Output:
In node 'Sticky Note7', the parameter 'content' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `**OpenRouter.ai**
We will use image as prompt and change the model to support image.
`

**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 Note7' parameter 'content'.


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

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

Workflow JSON:
{
  "id": "jbTm6O9bLBMm6RWy",
  "meta": {
    "instanceId": "workflow-bbd7e6db",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.014758",
    "updatedAt": "2025-09-29T07:07:47.014784",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "My workflow 3",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "24be1991-3de5-49c2-91a1-c636fb721a87",
      "name": "Weekly Trigger (Monday 7AM)",
      "type": "n8n-nodes-base.cron",
      "position": [
        80,
        180
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "id": "43d7764d-fbd4-414b-be44-bcc80c068db2",
      "name": "Get SEO Data from GSC",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        300,
        180
      ],
      "parameters": {
        "url": "{{ $env.BASE_URL }}",
        "options": {},
        "authentication": "{{ $credentials.genericCredentialType }}",
        "genericAuthType": "httpBasicAuth"
      },
      "typeVersion": 2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "92852fd3-7663-413e-b1a9-8c728dea9a23",
      "name": "Generate SEO Report",
      "type": "n8n-nodes-base.function",
      "position": [
        500,
        180
      ],
      "parameters": {
        "functionCode": "\n                const rows = items[0].json.rows || [];\n                const reportLines = rows.map((row, index) => {\n                    return `${index + 1}. ${row.keys[0]} - Clicks: ${row.clicks}, Impressions: ${row.impressions}, CTR: ${row.ctr.toFixed(2)}, Position: ${row.position.toFixed(2)}`;\n                });\n                return [{\n                    json: {\n                        r...

Output:
The node 'Generate SEO Report' 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 'Generate SEO Report'.


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": "mW6b4dMHkIDfnaIj",
  "meta": {
    "instanceId": "workflow-520237f0",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.061066",
    "updatedAt": "2025-09-29T07:07:47.061074",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "My workflow 4",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "9ae28c07-bb44-4e64-b38c-a74a9de81b2e",
      "name": "Receive Feedback",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -440,
        540
      ],
      "webhookId": "89e8d5ec-d442-41ea-9ff1-93a9df0b2aa1",
      "parameters": {
        "path": "client-feedback",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 1,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "770bc041-1846-4ac1-b8dc-61756686f906",
      "name": "Prepare AI Prompt",
      "type": "n8n-nodes-base.function",
      "position": [
        -240,
        540
      ],
      "parameters": {
        "functionCode": "\nconst feedback = $json.feedback || \"No feedback provided.\";\nreturn [{\n  json: {\n    prompt: `Analyze this client feedback: \"${feedback}\"\\n\\n1. Summarize the positive points.\\n2. Suggest improvements.\\n3. Generate a short social media post based on the positive elements.`\n  }\n}];\n"
      },
      "typeVersion": 1,
      "notes": "This function node performs automated tasks as part of the workflow."
    },
    {
      "id": "0b3a469a-f6f4-4140-9c6f-fd7ba7689c5e",
      "name": "Analyze with AI",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -40,
        540
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "options": {},
        "authentication": "{{ $credentials.predefinedCredentialType }}",
     ...

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": "ppsHlJlSpHPQJp4Q",
  "meta": {
    "instanceId": "workflow-35aea30e",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.018808",
    "updatedAt": "2025-09-29T07:07:47.018823",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "6615e821-d47d-4df9-aa10-4aebdd9e6737",
      "name": "Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -1100,
        -540
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes"
            }
          ]
        }
      },
      "typeVersion": 1.2,
      "notes": "This scheduleTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "456b6ea3-1360-4a6c-a862-84c022db78e4",
      "name": "HTTP Request",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -740,
        -540
      ],
      "parameters": {
        "url": "",
        "options": {
          "response": {
            "response": {
              "fullResponse": true
            }
          }
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "d1155cfc-c27a-40c5-8d70-c0705ce24c9b",
      "name": "Twilio",
      "type": "n8n-nodes-base.twilio",
      "position": [
        -240,
        -520
      ],
      "parameters": {
        "to": "",
        "from": "",
        "message": "Service Down",
        "options": {}
      },
      "credentials": {
        "twilioApi": {
          "id": "Izc7tLRJsN06wezO",
          "name": "Twilio account"
        }
      },
      "typeVersion": 1,
      "notes": "This twilio node performs automated tasks as part of the work...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "id": "qhZvZVCoV3HLjRkq",
  "meta": {
    "instanceId": "workflow-4b7b0000",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.027944",
    "updatedAt": "2025-09-29T07:07:47.027955",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Google Maps FULL",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "c5d63d91-ffcc-4c05-a1ee-d78ca955fc85",
      "name": "Trigger - When User Sends Message",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -400,
        -60
      ],
      "webhookId": "e5c0f357-c0a4-4ebc-9162-0382d8009539",
      "parameters": {
        "options": {}
      },
      "typeVersion": 1.1,
      "notes": "This chatTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "e422761f-a662-4fef-81fe-de42cdb350fc",
      "name": "AI Agent - Lead Collection",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -160,
        -60
      ],
      "parameters": {
        "options": {
          "systemMessage": "' UNIFIED AND OPTIMIZED PROMPT FOR DATA EXTRACTION VIA GOOGLE MAPS SCRAPER\n\n' --- 1. Task ---\n' - Collect high-quality professional leads from Google Maps, including:\n'   - Business name\n'   - Address\n'   - Phone number\n'   - Website\n'   - Email\n'   - Other relevant contact details\n' - Deliver organized, accurate, and actionable data.\n\n' --- 2. Context & Collaboration ---\n' - Tools & Sources:\n'   * Google Maps Scraper: Extracts data based on location, business type, and country code \n'     (ISO 3166 Alpha-2 in lowercase).\n'   * Website Scraper: Extracts data from provided URLs (the URL must be passed exactly as received, without quotation marks).\n'   * Google Sheets: Stores and retrieves previously extracted data.\n'   * Internet Search: Provides additional inform...

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:
{
  "id": "ra8MrqshnzXPy55O",
  "meta": {
    "instanceId": "workflow-2232e36f",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.033869",
    "updatedAt": "2025-09-29T07:07:47.033887",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "upload-post images",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "7d899b35-ae00-418a-b890-e318f6d61f7a",
      "name": "POST TO INSTAGRAM1",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        820,
        -220
      ],
      "parameters": {
        "url": "{{ $env.API_BASE_URL }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "contentType": "multipart-form-data",
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "title",
              "value": "title-ig"
            },
            {
              "name": "user",
              "value": "user_name"
            },
            {
              "name": "platform[]",
              "value": "instagram"
            },
            {
              "name": "photos[]",
              "parameterType": "formBinaryData",
              "inputDataFieldName": "=photo1"
            },
            {
              "name": "photos[]",
              "parameterType": "formBinaryData",
              "inputDataFieldName": "photo2"
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Apikey api"
            }
          ]
        }
      },
      "typeVersion": 4.2,
      "notes": "This httpRequest node performs automated tasks as part of the workflow."
    },
    {
      "id": "025c1aa3-acf2-4211-93e1-9df2182bbf07",
      "name": "Sticky Note7",
   ...

Output:
The node 'Sticky Note7' has a data type mismatch in its parameters.

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

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

**Solutions**:

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

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

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

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

Fix data type conversion in 'Sticky Note7'.


Instruction:
Debug this n8n workflow. It has the following issue:
Error Type: 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": "xibc6WDU53isYN1o",
  "meta": {
    "instanceId": "workflow-302ca12b",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.060687",
    "updatedAt": "2025-09-29T07:07:47.060705",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Line Chatbot Handling AI Responses with Groq and Llama3",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "9b936123-7f31-4ddc-b1ca-fd172da9c5a8",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        0,
        -200
      ],
      "parameters": {
        "width": 440,
        "content": "## Line AI Chatbot with Groq \nThis workflow automates the process of handling messages from Line Messaging API by sending message to Groq as your AI assistant and reply back to you. In this workflow, you can see that there is no JSON error when sending long and complex message."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "0d75416e-58f0-4411-8904-7051f0d1c06a",
      "name": "Line: Messaging API",
      "type": "n8n-nodes-base.webhook",
      "position": [
        0,
        0
      ],
      "webhookId": "befed026-573c-4d3a-9113-046ea8ae5930",
      "parameters": {
        "path": "befed026-573c-4d3a-9113-046ea8ae5930",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "e363c981-acdf-4048-a531-31808cd3edc5",
      "name": "Get Messages",
      "type": "n8n-nodes-base.set",
      "position": [
        300,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
          ...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Clearbit",
      "type": "n8n-nodes-base.clearbit",
      "position": [
        850,
        300
      ],
      "parameters": {
        "email": "={{$json[\"properties\"][\"email\"][\"value\"]}}",
        "resource": "person",
        "additionalFields": {}
      },
      "credentials": {
        "clearbitApi": {
          "id": "{{ $credentials.clearbitApi.id }}",
          "name": "Clearbit account"
        }
      },
      "typeVersion": 1,
      "id": "c6862e64-f520-47cf-bb80-a89c86c6528d",
      "notes": "This clearbit node performs automated tasks as part of the workflow."
    },
    {
      "name": "Hubspot Trigger",
      "type": "n8n-nodes-base.hubspotTrigger",
      "position": [
        450,
        300
      ],
      "webhookId": "b9c442e0-6f98-4d6f-8170-7135c4dbd850",
      "parameters": {
        "eventsUi": {
          "eventValues": [
            {}
          ]
        },
        "additionalFields": {}
      },
      "credentials": {
        "hubspotDeveloperApi": {
          "id": "{{ $credentials.hubspotDeveloperApi.id }}",
          "name": "Hubspot Developer account"
        }
      },
      "typeVersion": 1,
      "id": "6e9a1111-b506-4f55-95a6-fa45eb0c025b",
      "notes": "This hubspotTrigger node performs automated tasks as part of the workflow."
    },
    {
      "name": "Get Contact",
      "type": "n8n-nodes-base.hubspot",
      "position": [
        650,
        300
      ],
      "parameters": {
        "resource": "contact",
        "contactId": "={{$json[\"contactId\"]}}",
        "operation": "get",
        "authentication": "{{ $credentials.oAuth2 }}",
        "additionalFields": {}
      },
      "credentials": {
        "hubspotOAuth2Api": {
          "id": "{{ $credentials.hubspotOAuth2Api.id }}",
          "name": "HubSpot@Test Account"
        }
      },
      "typeVersion": 1,
      "id": "d4b4e1b8-f77b-4ed6-aec2-303df9048673",
      "notes": "This hubspot node performs automated tasks as pa...

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: 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": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        560,
        350
      ],
      "parameters": {},
      "typeVersion": 1,
      "id": "bb404988-831e-444a-b83b-33657c8c1019",
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "name": "Pipedrive",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        760,
        250
      ],
      "parameters": {
        "resource": "person",
        "operation": "getAll",
        "returnAll": true,
        "additionalFields": {}
      },
      "credentials": {
        "pipedriveApi": {
          "id": "{{ $credentials.pipedriveApi.id }}",
          "name": "pipedrive_api"
        }
      },
      "typeVersion": 1,
      "id": "4a33c7c9-561b-4c16-ac28-e1363eb7c865",
      "notes": "This pipedrive node performs automated tasks as part of the workflow."
    },
    {
      "name": "Update Pipedrive",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        1160,
        250
      ],
      "parameters": {
        "name": "={{$json[\"properties\"][\"firstname\"][\"value\"]}}",
        "resource": "person",
        "additionalFields": {
          "email": [
            "={{$json[\"identity-profiles\"][0][\"identities\"][0][\"value\"]}}"
          ]
        }
      },
      "credentials": {
        "pipedriveApi": {
          "id": "{{ $credentials.pipedriveApi.id }}",
          "name": "pipedrive_api"
        }
      },
      "typeVersion": 1,
      "id": "322d89a7-309b-409d-80a0-5b2c1dd6ccb5",
      "notes": "This pipedrive node performs automated tasks as part of the workflow."
    },
    {
      "name": "HubSpot",
      "type": "n8n-nodes-base.hubspot",
      "position": [
        760,
        450
      ],
      "parameters": {
        "resource": "contact",
        "operation": "getAll",
        "returnAll": true,
        "additionalFields": {}
      },
      "credentials": {
        "hubspotApi": {...

Output:
The node 'Merge1' has a data type mismatch in its parameters.

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

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

**Solutions**:

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

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

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

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "name": "Hubspot",
      "type": "n8n-nodes-base.hubspot",
      "position": [
        750,
        900
      ],
      "parameters": {
        "resource": "contact",
        "operation": "getAll",
        "returnAll": true,
        "additionalFields": {}
      },
      "credentials": {
        "hubspotApi": {
          "id": "{{ $credentials.hubspotApi.id }}",
          "name": "hubspot_nodeqa"
        }
      },
      "typeVersion": 1,
      "id": "758f95e5-ee18-48c1-b4c4-0f0229718284",
      "notes": "This hubspot node performs automated tasks as part of the workflow."
    },
    {
      "name": "Pipedrive",
      "type": "n8n-nodes-base.pipedrive",
      "position": [
        750,
        710
      ],
      "parameters": {
        "resource": "person",
        "operation": "getAll",
        "returnAll": true,
        "additionalFields": {}
      },
      "credentials": {
        "pipedriveApi": {
          "id": "{{ $credentials.pipedriveApi.id }}",
          "name": "asasas"
        }
      },
      "typeVersion": 1,
      "id": "081bf2a4-536b-4f4a-baa0-7bd3fa1987b9",
      "notes": "This pipedrive node performs automated tasks as part of the workflow."
    },
    {
      "name": "Merge",
      "type": "n8n-nodes-base.merge",
      "position": [
        950,
        800
      ],
      "parameters": {
        "mode": "removeKeyMatches",
        "propertyName1": "email[0].value",
        "propertyName2": "identity-profiles[0].identities[0].value"
      },
      "typeVersion": 1,
      "id": "92c872b3-1fe2-428d-9913-6e9f48e8f9e8",
      "notes": "This merge node performs automated tasks as part of the workflow."
    },
    {
      "name": "HubSpot2",
      "type": "n8n-nodes-base.hubspot",
      "position": [
        1150,
        800
      ],
      "parameters": {
        "email": "={{$json[\"email\"][0][\"value\"]}}",
        "resource": "contact",
        "additionalFields": {
          "firstName": "={{$json[\"first_name\"]}}"
       ...

Output:
The node 'HubSpot2' (type: n8n-nodes-base.hubspot) 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": {
  "hubspotApi": {
    "id": "{{ $credentials.hubspotApi.id }}",
    "name": "hubspot_nodeqa"
  }
}
```

**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 'HubSpot2' 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:
{
  "meta": {
    "instanceId": "workflow-f2bbc004",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.161988",
    "updatedAt": "2025-09-29T07:07:47.162000",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "35451a0c-1ad5-4c02-804b-d19afd282b09",
      "name": "Get last execution timestamp",
      "type": "n8n-nodes-base.functionItem",
      "position": [
        540,
        100
      ],
      "parameters": {
        "functionCode": "// Code here will run once per input item.\n// More info and help: {{ $env.WEBHOOK_URL }}\n// Tip: You can use luxon for dates and $jmespath for querying JSON structures\n\n// Add a new field called 'myNewField' to the JSON of the item\nconst staticData = getWorkflowStaticData('global');\n\nif(!staticData.lastExecution){\n  staticData.lastExecution = new Date();\n}\n\nitem.executionTimeStamp = new Date();\nitem.lastExecution = staticData.lastExecution;\n\n\nreturn item;"
      },
      "typeVersion": 1,
      "notes": "This functionItem node performs automated tasks as part of the workflow."
    },
    {
      "id": "18ff2308-216e-4c1e-afb9-bd41ae7b5e4d",
      "name": "Every day at 07:00",
      "type": "n8n-nodes-base.cron",
      "position": [
        320,
        100
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "hour": 7
            }
          ]
        }
      },
      "typeVersion": 1,
      "notes": "This cron node performs automated tasks as part of the workflow."
    },
    {
      "id": "53d3203b-2518-471f-9c72-2ab41303cdf2",
      "name": "Set new last execution timestamp",
      "type": "n8n-nodes-base.functionItem",
      "position": [
        1240,
        100
      ],
      "parameters": {
        "functionCode": "={{ $json[\"non_existent_field\"] }}"
      },
      "executeOnce": true,
      "typeVersion...

Output:
In node 'Set new last execution timestamp', the parameter 'functionCode' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json["non_existent_field"] }}`
**Original Value**: `// Code here will run once per input item.
// More info and help: {{ $env.WEBHOOK_URL }}
// Tip: You can use luxon for dates and $jmespath for querying JSON structures

// Add a new field called 'myNewField' to the JSON of the item
const staticData = getWorkflowStaticData('global');

staticData.lastExecution = $item(0).$node["Get last execution timestamp"].executionTimeStamp;

return item;`

**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 'Set new last execution timestamp' parameter 'functionCode'.


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "b9256d00-9dff-432a-a678-e71a4074b26c",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        -20,
        -160
      ],
      "webhookId": "06d29616-8fa9-42cf-8b5f-abe856083c75",
      "parameters": {
        "path": "06d29616-8fa9-42cf-8b5f-abe856083c75",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 2,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "2726dd28-5366-4c0e-ad16-bae6dc2cbc0b",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -880,
        -200
      ],
      "parameters": {
        "color": 4,
        "width": 320,
        "height": 440,
        "content": "## What does it do?\nObjective:\n\nStreamline the onboarding process for new customers, ensuring they receive all necessary resources and support.\nTrigger: Set a webhook trigger or a CRM trigger (like HubSpot or Salesforce) for when a new customer is added.\n\nSend Welcome Email: Use the Gmail or SMTP node to send a personalized welcome email to the customer.\n\nSchedule a Welcome Call: Use the Calendar node (Google Calendar) to automatically create a calendar event for a welcome call.\n\nAssign a CSM: Use the CRM node (like HubSpot) to assign the new customer to a dedicated CSM."
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "680bdd4e-f382-4d20-8197-a7d65454ce36",
      "name": "Try Again",
      "type": "n8n-nodes-base.set",
      "position": [
        1000,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "7ab380a2-a8d3-421c-ab4e-748ea8fb7904",
              "name": "response",
              "type": "string",
              "value": "Unable to perform task. Please try again."
   ...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "id": "1blBTEfOEjamDB0N",
  "meta": {
    "instanceId": "workflow-0a95d495",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.177568",
    "updatedAt": "2025-09-29T07:07:47.177582",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "name": "Email form",
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "nodes": [
    {
      "id": "0994dde9-bad8-49b8-b164-1f191decf9ff",
      "name": "Email is not valid, do nothing",
      "type": "n8n-nodes-base.noOp",
      "position": [
        940,
        480
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This noOp node performs automated tasks as part of the workflow."
    },
    {
      "id": "b27e140e-7758-42d4-bf07-39b17f85fc82",
      "name": "Check if the email is valid",
      "type": "n8n-nodes-base.if",
      "position": [
        620,
        260
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 1,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "54d84c8a-63ee-40ed-8fb2-301fff0194ba",
              "operator": {
                "name": "filter.operator.equals",
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $json.status }}",
              "rightValue": "valid"
            }
          ]
        }
      },
      "typeVersion": 2,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "a691af9a-f66f-4fd1-ab82-3d3450098d67",
      "name": "Verify email",
      "type": "n8n-nodes-base.hunter",
      "position": [
        360,
        260
      ],
      "parameter...

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:
{
  "meta": {
    "instanceId": "workflow-d32f58b2",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.196186",
    "updatedAt": "2025-09-29T07:07:47.196192",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "bcd8e7dc-cb7f-4e2b-a0c6-2d154cb58938",
      "name": "n8n Form Trigger",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        820,
        360
      ],
      "webhookId": "0bf8840f-1cc4-46a9-86af-a3fa8da80608",
      "parameters": {
        "path": "0bf8840f-1cc4-46a9-86af-a3fa8da80608",
        "options": {},
        "formTitle": "Contact us",
        "formFields": {
          "values": [
            {
              "fieldLabel": "What's your business email?"
            }
          ]
        },
        "formDescription": "We'll get back to you soon"
      },
      "typeVersion": 2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "0720ab51-5222-46fe-8a1a-31e25b81920c",
      "name": "Hunter",
      "type": "n8n-nodes-base.hunter",
      "position": [
        1040,
        360
      ],
      "parameters": {
        "email": "={{ $json['What\\'s your business email?'] }}",
        "operation": "emailVerifier"
      },
      "credentials": {
        "hunterApi": {
          "id": "oIxKoEBTBJeT1UrT",
          "name": "Hunter account"
        }
      },
      "typeVersion": 1,
      "notes": "This hunter node performs automated tasks as part of the workflow."
    },
    {
      "id": "c20c626f-fd58-497f-942f-5d10f198f36d",
      "name": "Check if the email is valid",
      "type": "n8n-nodes-base.if",
      "position": [
        1240,
        360
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "type...

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

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

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

**Solutions**:

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

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

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

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

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


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

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "74e0d9d8-9a05-4bf6-82a1-7c7c6b488ac7",
      "name": "n8n Form Trigger",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        380,
        420
      ],
      "webhookId": "ee00f236-5dad-49db-8f29-71b7bce37894",
      "parameters": {
        "path": "0bf8840f-1cc4-46a9-86af-a3fa8da80608",
        "options": {},
        "formTitle": "Contact us",
        "formFields": {
          "values": [
            {
              "fieldLabel": "What's your business email?"
            }
          ]
        },
        "formDescription": "We'll get back to you soon"
      },
      "typeVersion": 2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "86956707-6a69-465e-b73e-e49bfb6fa252",
      "name": "Check if the email is valid",
      "type": "n8n-nodes-base.if",
      "position": [
        800,
        420
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "54d84c8a-63ee-40ed-8fb2-301fff0194ba",
              "operator": {
                "name": "filter.operator.equals",
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $json.status }}",
              "rightValue": "valid"
            }
          ]
        }
      },
      "typeVersion": 2,
      "notes": "This if node performs automated tasks as part of the workflow."
    },
    {
      "id": "15991bbc-77c7-405f-8d8d-aeb5693b8eed",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        380,
        220
      ],
      "parameters": {
        "color": 5,
        "width": 547,
        "height": 158,
        "content": "### \ud83d\udc68\u200d\ud83c\...

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: Missing Credentials

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

Workflow JSON:
{
  "nodes": [
    {
      "id": "3890c4a4-0649-457f-9dd7-1e688f4a0024",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        320,
        160
      ],
      "parameters": {
        "color": 5,
        "width": 731,
        "height": 210.61602497398542,
        "content": "### \ud83d\udc68\u200d\ud83c\udfa4 Setup\n1. Add you **MadKudu**, **Hunter**, and **Gmail** credentials \n2. Setup your **HubSpot** Oauth2 creds using [n8n docs]({{ $env.WEBHOOK_URL }}\n3. Set the email content and subject\n4. Click the Test Workflow button, enter your email and check the Slack channel\n5. Activate the workflow and use the form trigger production URL to collect your leads in a smart way "
      },
      "typeVersion": 1,
      "notes": "This stickyNote node performs automated tasks as part of the workflow."
    },
    {
      "id": "77a064c2-852b-4526-aa8b-9a25d3a56844",
      "name": "n8n Form Trigger",
      "type": "n8n-nodes-base.formTrigger",
      "position": [
        380,
        420
      ],
      "webhookId": "09f63412-7c4a-4752-93cd-ff1c87774226",
      "parameters": {
        "path": "0bf8840f-1cc4-46a9-86af-a3fa8da80608",
        "options": {},
        "formTitle": "Contact us",
        "formFields": {
          "values": [
            {
              "fieldLabel": "What's your business email?"
            }
          ]
        },
        "formDescription": "We'll get back to you soon"
      },
      "typeVersion": 2,
      "notes": "This formTrigger node performs automated tasks as part of the workflow."
    },
    {
      "id": "9e0ea519-0022-4b9b-853a-6d627f2d427b",
      "name": "Check if the email is valid",
      "type": "n8n-nodes-base.if",
      "position": [
        800,
        420
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combin...

Output:
The node 'HubSpot' (type: n8n-nodes-base.hubspot) 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": {
  "hubspotOAuth2Api": {
    "id": "Gxwfj6z9NwaEC3P5",
    "name": "HubSpot account 3"
  }
}
```

**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 'HubSpot' 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:
{
  "meta": {
    "instanceId": "workflow-c4a3e350",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:47.260148",
    "updatedAt": "2025-09-29T07:07:47.260169",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "nodes": [
    {
      "id": "1f578b25-ab5b-40f3-9ccc-7f5975959073",
      "name": "Could not find user",
      "type": "n8n-nodes-base.noOp",
      "position": [
        1620,
        560
      ],
      "parameters": {},
      "typeVersion": 1,
      "notes": "This noOp node performs automated tasks as part of the workflow."
    },
    {
      "id": "236436e0-1fc9-4411-b34c-946246ecbe19",
      "name": "On Webhook event from Intercom",
      "type": "n8n-nodes-base.webhook",
      "position": [
        700,
        500
      ],
      "webhookId": "11e21ebc-27ef-49b5-8c77-648faf3e86e0",
      "parameters": {
        "path": "11e21ebc-27ef-49b5-8c77-648faf3e86e0",
        "options": {},
        "httpMethod": "POST"
      },
      "typeVersion": 1.1,
      "notes": "This webhook node performs automated tasks as part of the workflow."
    },
    {
      "id": "10e2e89c-6ea2-4888-99c8-2f5d99cb1a1d",
      "name": "set key fields",
      "type": "n8n-nodes-base.set",
      "position": [
        1120,
        340
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "3631124b-89e3-49b5-a792-36264eb502f0",
              "name": "user_id",
              "type": "string",
              "value": "={{ $json.body.data.item.id }}"
            },
            {
              "id": "3c2a877d-186b-4a26-86f2-d686e5630e42",
              "name": "email",
              "type": "string",
              "value": "={{ $json.body.data.item.email }}"
            }
          ]
        }
      },
      "typeVersion": 3.3,
      "notes": "This set node performs automated tasks as...

Output:
In node 'Enrich user from ExactBuyer', the parameter 'url' contains an expression that references undefined data.

**Faulty Expression**: `={{ $json.deeply.nested.undefined.path }}`
**Original Value**: `{{ $env.API_BASE_URL }}`

**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 'Enrich user from ExactBuyer' parameter 'url'.