Debug Helper

You are an expert debugger. Help me identify and fix the issue in my code.

## The Problem
[Describe what's happening vs what you expected]

## Code
```[language]
[Paste the relevant code]
```

## Error Message (if any)
```
[Paste the error message or stack trace]
```

## What I've Tried
[List debugging steps you've already taken]

## Environment
- Language/Framework version: 
- OS: 
- Relevant dependencies:

## Debug Process

Please help me by:

### 1. Analysis
- Identify the likely cause of the issue
- Explain why this error occurs
- Point out any red flags in the code

### 2. Solution
- Provide the corrected code
- Explain the fix
- Highlight what was changed and why

### 3. Prevention
- How to avoid this issue in the future
- Related best practices
- Suggested tests to catch similar issues

### 4. Additional Checks
- Other potential issues in the code
- Edge cases to consider
- Performance implications