Plexamp 4.13.1 opens blank in Linux, no logs

I don’t use mint or chromeos (I’m on fedora) however have you tried installing the flatpak version ? I have mint on a VM and it worked okay. It was confirmed here Plexamp Appimage Lost Icon(s) - #2 by aubrey.wodonga that the recommendation from plex development is to not use the AppImage and to use flatpak instead.