No spotify playlists, Delete Folders in hass.io?

Hi,
since a few weeks i dont get any playlists in mopidy and moped. That means they do not get listed, and i can not play them with the API of mopidy like i used to before (no config change, still valid spotify premium). So now the internet says “delete this and this cache folder”.
How do i do that in hass.io? Reinstalling the “mopidy” plugin did not help. Is there some kind of folder access?
Or does someone have a solution to no playlists of spotify showing?

Greetings