Problem syncing local files from Apple Music Windows to iPhone (Error 4007)

Hello,

It’s been a few days now that I can’t sync my local files on my iPhone from my Windows App Apple Music.

The syncing starts and goes on for about 10 minutes, then I have a message saying "Genius results can’t be updated right now. An unknown error occurred (4007)."

what can I do ? It used to work fine, but all of a sudden it didn’t. I’ve tried logging out and logging in, delete the app then reinstall it, delete my library and starting a new one…. It’s ******* me off as I usually love Apple Music but it can’t be very useful now that it seems broken.

here’s the screencap of the message (in French sorry lol)