I have Java 11 installed under Zorin OS Core 16.2 and the ISO will play but of course I can't see any menus.
The exact same ISO plays just fine and the menu is available using VLC under Windows. I've also tried other ISOs which work fine with menus under Windows but I get this Java error under Zorin OS.
What am I missing?
I've done a load of googling but none of the suggestions have helped so here I am.
The ability to install and use Flatpak Packages is included by Default in Zorin OS. This includes the base Flatpak Management. It does not include a bunch of Flatpak Packages, however (Zorin Themes in Flatpak form are included though).
Software may install as a Snap - a Flatpak or a .deb (apt). Check the source for the package you installed to know which of the three it is.