I upgraded my system from Ubuntu 21.04 to 21.10. I previouslly had Firefox installed from a .deb After the upgrade to 21.10 when I tried to launch Firefox I get the following error; > Gtk-Message: 15:57:41.476: Failed to load module “canberra-gtk-module” [GFX1-]: glxtest: libEGL missing I’ve removed and reinstalled the new Firefox snap. I get the same error when I launch it from the terminal. When I launch from the graphical interface; toolbar> Applications> Internet> Firefox I get a different error; > Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile. This happens even following a full shutdown and restart.