promox scipt install of ubuntu22.04

[TheDreadPirate]

5. I created 2 'mixed' jellyfin libraries; one folder is pointed to a virtiodisk mounted and  writable by user 'dixon', and also a jellyfin library with path to my '/home/dixon' directory

You kind of said it right there.  The virtio disk is "writeable" and, I'm assuming, readable only by dixon.  But Jellyfin has its own user.  You should not specify a user for the disk mount parameters, remount, and make sure the jellyfin user has read + execute permissions on the folders and read permissions on the files.

And the same applies for your second library in your home directory.  You should move that library out of your home directory and create a new folder in the root ( / ) path that Jellyfin owns or has access to.  Never give other users access to your home folder.  Most people use /media as their library path.