🐛 n8n Error Decoder

Free n8n Workflow Debugger That Actually Helps

Paste your error message, get plain English explanations and step-by-step fixes.

Instant Diagnosis

Step-by-Step Fixes

Common Patterns

Try Free Workflow Debugger

What Is the n8n Workflow Debugger?

The n8n Workflow Debugger is a free tool that analyzes your n8n error messages and provides clear, actionable explanations. Instead of searching through forums or documentation, paste your error and get immediate insights into what went wrong and how to fix it. The tool recognizes common error patterns from thousands of community issues and provides targeted solutions.

Why Debugging n8n Workflows Is Challenging

n8n error messages can be cryptic and technical, especially for users who aren't developers. Errors like 'Cannot read properties of undefined' or 'The workflow has issues and cannot be executed' don't clearly explain what's wrong. This tool bridges that gap by translating technical errors into understandable language and providing specific fixes based on your workflow context.

n8n Debugging Best Practices

Always check the execution log to see which node failed
Use the 'pin data' feature to test nodes with consistent input
Add error handling with the Error Trigger node for production workflows
Test complex expressions in isolation before using them in workflows
Check credential permissions when authentication errors occur
Review the n8n community forum for similar issues and solutions

Frequently Asked Questions

Is this tool really free?

Yes, completely free with no signup required. We offer this tool to help the n8n community and demonstrate our expertise. If you need hands-on help fixing complex issues, we offer professional n8n development services.

What types of errors can this tool diagnose?

The debugger handles most common n8n errors including authentication failures, API errors, expression errors, node configuration issues, and workflow execution failures. It covers HTTP Request, Code, Webhook, database, and integration node errors.

Is my error message data kept private?

We process your error message to provide analysis but don't store your data long-term. For sensitive workflows, remove any actual credentials or personal data before pasting. The tool only needs the error message structure, not real values.

What if the tool can't identify my error?

Some errors are unique to specific configurations. If the tool can't diagnose your issue, try the n8n community forum or contact us for professional support. Include your n8n version and the full error stack trace for best results.

Can this tool fix my workflow automatically?

The tool provides diagnosis and step-by-step fix instructions, but doesn't modify your workflow directly. You'll need to apply the suggested fixes in your n8n instance. For hands-off fixes, consider our workflow development services.

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