radon-mcp

## Debug Analysis Report for Project: "EcoTrack"

### Issue Detected
The app crashes when navigating to the `ProfileScreen` due to an unhandled promise rejection in the `fetchUserData()` function.

### Debugging Steps Performed
1. **Logs Inspection**
   - Extracted recent logs using Radon MCP:
   ```
   [Error] Unhandled promise rejection: TypeError: Cannot read property 'token' of null
   at fetchUserData (ProfileScreen.js:42:15)
   ```

2. **Network Requests**
   - Reviewed network activity during the crash:
   ```
   GET https://api.ecotrack.com/users/me → Status: 401 Unauthorized
   ```

3. **Screenshots**
   - Captured the app state at crash time:
   ![Screenshot](data:image/png;base64,...)

### Root Cause
The `authToken` in AsyncStorage was cleared unexpectedly, causing the API request to fail with a 401 error.

### Recommended Fixes
- **Immediate:** Add error handling in `fetchUserData()`:
  ```javascript
  const fetchUserData = async () => {
    try {
      const token = await AsyncStorage.getItem('authToken');
      if (!token) throw new Error('No auth token found');
      // ... rest of the logic
    } catch (error) {
      console.error('Failed to fetch user data:', error);
      Alert.alert('Error', 'Please log in again');
    }
  };
  ```

- **Long-term:** Implement token refresh logic and add a global error boundary for React Native.

### Next Steps
- Test the fix in a staging environment.
- Monitor for similar crashes in production.