Music The Operation could not be completed. An unknown error occured (-12894)

Hello.

Hope someone can assist. I have uploaded all of my music into Apple Music.

When I listen to the songs directly from Apple Music (i.e. not downloaded to the device), then it plays fine.

When I download the songs to my devices and try to play them then I receive and error message for some of these songs "The Operation could not be completed. An unknown error occurred (-12894)".

I have deleted and downloaded these songs multiple times. I have even rebooted my device. Nothing seems to work.

Anybody have any suggestions?