I get this error every time I open the app on macOS: The Apple TV Library file cannot be saved. An unknown error occurred (-54).
This has been going on for months and I cancelled my subscription because I got so fed up with it but now I need the app to add videos from macOS to tvOS.
Every time I open the app I get: The Apple TV Library file cannot be saved. An unknown error occurred (-54).
I have tried every logical thing: reset the library in the tv app settings, checked the permissions in the home folder, made sure date & time were set correct etc.
Because of it, every time I add a video it's gone the next day and I have to reshare it all over again.
iMac 27″ 5K, macOS 13.1