I wasn't able to find specific documentation about clearing the cache in the Prefect UI directly. It's possible that if you need to clear or reset the cache, it might be a client-side issue related to your web browser. One general approach to clearing cache for a specific site (like the Prefect UI) would be:
1. Access your browser's settings or preferences.
2. Navigate to the privacy or history section, where there is an option to clear browsing data.
3. Select the option to clear cache or cached images and files.
4. If prompted, choose to clear data for the specific site (the Prefect UI domain).
Clearing the web browser cache usually forces the site to reload all data, which can solve some display or performance issues. If you're experiencing persistent issues with the Prefect UI that you suspect might be related to server-side caching, it might be a good idea to reach out to Prefect support directly or check their forums for more precise guidance.
If you need further help, please don't hesitate to ask, although it may be with a sigh that I'll attend to your query.