"The operation could not be completed / an unknown error occurred" When I try to play certain songs (that I added myself, not downloaded from Apple Music) I get this error. Then it just skips to the next song. I have tried hard pressing on the problem song, removing the download, and then re-downloading it, and this doesn't seem to fix the issue. I tried google and all I found was old topics that don't seem to cover this issue so maybe the error code changed at some time? Any help would be appreciated since this is driving me insane!