None of my music wants to Sync



I found many posts about this from years and none of them have a solution. I can sync TV shows and movies but I cant sync any of my music with my Android and iPad. always get the "There is an error with this item"

Any idea? I reboot my server (CentOS7), removed and re- installed the apps about 20 times. Remove my devices from the device area in Plex and cleared cache but no, still not working. Wasted pretty much all my Saturday on this and nothing. Folder and files has drwxrwxrwx nobody nobody permissions.

Please help


well, definitely no support, be careful people about the Plex Pass for a broken system without support