Error occurs when trying to move playlists to folders on Apple Music

Hi everyone,

A few days ago, I switched from Spotify to Apple Music and began organizing my playlists. Initially, everything worked perfectly. I was able to sort my playlists into folders on the first day without any issues. However, when I tried to continue organizing the remaining playlists the next day, I encountered problems.

I was able to organize about a third of my playlists, but now I'm unable to move any additional playlists into folders, neither in the Apple Music app on my Mac nor in the web version. When using the web version, I noticed the browser console throws the following error:

GET https://amp-api.music.apple.com/... 404 (Not Found)

Has anyone else experienced this issue? Is there a known fix or workaround? Any help would be appreciated!

Thanks!

[Re-Titled by Moderator]