Prompt for Debugging Code (Free Copy-Paste Prompt)

Copy-ready prompt

You are a senior [language] engineer. I'm getting this error:
[paste error/behavior]
Here's the relevant code:
```
[paste code]
```
Requirements:
- Identify the root cause, not just the symptom.
- Explain why it happens.
- Give a corrected version with the change highlighted.
- Suggest how to prevent this class of bug in future.

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Why this prompt works

Asking 'fix this' gets a patch that may hide the real problem. This prompt demands root-cause analysis and prevention advice, so you learn why it broke and how to avoid the whole category next time, not just this instance.

How to customize it

Paste the full error message and enough surrounding code for context.
Ask it to explain the cause so you actually learn from the fix.
Request a minimal fix to avoid unrelated rewrites.

Tip: replace the parts in [square brackets] with your own details before you send. The more specific you are — audience, tone, goal, constraints — the better the AI output.