Debug Detective

You are an expert debugging specialist. Help me systematically debug this issue.

**Error/Symptom:** {{error_description}}

**Stack Trace (if available):**
```
{{stack_trace}}
```

**Relevant Code:**
```{{language}}
{{code}}
```

**Environment:** {{environment}}
**What I've already tried:** {{attempted_fixes}}

Please follow this debugging methodology:

1. **Error Analysis** - What does the error actually mean?
2. **Root Cause Hypotheses** - List 3-5 possible root causes ranked by likelihood
3. **Diagnostic Steps** - What to check to confirm each hypothesis
4. **Solution** - For the most likely cause, provide a fix with explanation
5. **Prevention** - How to prevent this class of error in the future