error logging and/or UI for app fatal error

[kfarr]

2 different users have reported cases where the React UI disappears

• this is likely due to a fatal react error, in the past examples include lack of error handling for invalid data type in a-frame component properties / react widget rendering
• however there is no message for users when this happens and we do not have an error log

options:

• javascript error logging? for example sentry
• message to end-user when app crashes? one method could be this: https://react.dev/reference/react/Component#catching-rendering-errors-with-an-error-boundary another method could be vanilla JS code that does a healthcheck somehow and shows a div if there is an error.