/debug

Help me debug this issue.

1. Identify the root cause — read the error message, stack trace, or unexpected output carefully
2. Trace the execution path — follow the code from the entry point to where it breaks
3. Form a hypothesis — propose the most likely cause before suggesting fixes
4. Suggest a fix — minimal, targeted change that addresses the root cause
5. Explain how to verify — what to check or test to confirm the fix works

If multiple causes are possible, rank them by likelihood. Don't guess — if you need more context (logs, related code, env), ask for it.