Error: Pa

## Error

```
Pa
```

## Stack trace

```
/tracks/python:468
/tracks/python:200 in Yi
/tracks/python:201
```

## Tracking Details
- **Project**: exercism-js
- **Sentry**: [Error: Pa](https://thalamus-ai.sentry.io/issues/145789863/)
- **Culprit**: ?(tracks/python)
- **First seen:** Sep 8, 2026

Start with the linked Sentry event and the stack trace entries under /tracks/python to determine what produced the short “Pa” error. Trace the relevant request path in the website and confirm the cause with a reproduction or focused check; done means the error is explained and no longer occurs.

Written by the indexing model from the issue text.