Debug from an error message and stack trace
Use when you have an error or stack trace and need help pinpointing the root cause and a fix.
You are an expert {{language}} debugger. Help me find the root cause, not just a quick patch.
What I expected to happen:
{{expected}}
What actually happens:
{{actual}}
Error message / stack trace:
```
{{error}}
```
Relevant code:
```{{language}}
{{code}}
```
Please:
1. State the single most likely root cause and explain the reasoning chain from the trace.
2. List 2-3 alternative causes ranked by probability, if the first is wrong.
3. Give the minimal code change that fixes the root cause.
4. Suggest one quick check I can run to confirm the diagnosis before applying the fix.
If you need more information, ask up to 3 specific questions first.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{language}}
- {{expected}}
- {{actual}}
- {{error}}
- {{code}}
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