> For the complete documentation index, see [llms.txt](https://docs.buzzy.buzz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.buzzy.buzz/troubleshooting/app-error-codes/runtime-exception.md).

# Runtime Exception

An unexpected error occurred while running the app. This could be due to:

* JavaScript runtime errors
* Uncaught exceptions
* Invalid state transitions

## How to Fix

1. Check the error details in the browser console
2. Review any recent code changes that might have introduced the error
3. Ensure all required dependencies are properly loaded
4. Verify that all data being accessed exists and is in the expected format

## Using Buzzy AI

You can ask Buzzy AI to help diagnose and fix the runtime error by clicking the "Get AI assistance" button on the error page.