Debug an Error Message

Work through an error message or stack trace systematically instead of guessing.

Universal

Use case

Use when you're stuck on an error and want a structured diagnosis rather than a single guessed fix.

Customize

Language/framework *

Framework

Error message / stack trace *

Relevant code *

Preview

I'm getting this error in a {language}/{framework} project:

```
{error_message}
```

Relevant code:
```
{code_context}
```

Walk through: (1) what this error means in plain language, (2) the most likely 2-3 root causes given the code context, ranked by likelihood, (3) how to confirm which one it actually is, and (4) a fix for the most likely cause. Don't just paste a fix without explaining the reasoning — I want to understand why it happened, not just make the error disappear.

Usage guidance

Include the actual code around the failure point, not just the error text — most debugging value comes from the model seeing what the code does right before the failure.