After I upgraded to Sequoia my Music playlists disappeared.
If I try to add songs to Music I get the error messages in the images below.
I still have all my songs backed up on external drives but I can't add them to Music.
[Re-Titled by Moderator]
iMac 27″, macOS 15.4
See also Repair security permissions for iTunes/Music for Mac - Apple Community.
What did you upgrade from? If there has been a change to the Music database format your original library may have been copied to the Previous Libraries folder inside your ~/Music/Music folder.
tt2
Perhaps this achieved article will help:
If you see error -54 when you sync with your computer - Apple Support
How to resolve Apple Music errors and restore playlists after upgrading to Sequoia?
