Cannot update iCloud
I have a MacBook Pro. My issue is regarding iTunes. I cannot update the iCloud library with a 4007 error message returning. Everything has worked well for years. Then all of a sudden, when I upload a new song, I can't update the iCloud library. I have restarted my computer and the iTunes app. I opened iTunes in safe mode but when I do, it doesn't give any options to update the library. I unchecked the "sync library" setting in settings, but now it stays unchecked when I reopen iTunes until I check it again. I have cleared the cache. I have rebooted the router. I'm stumped. anything else to do please?
By the way; the error message specifically says: "The Cloud Music Library can't be updated right now. An unknown error occurred (4007)" - this is the error message I've been getting for the past few days.
MacBook Pro 16″