Since the latest Firefox update (83.0 here, on W10), a "XDR encoding failure" error message pop up when I try to go on the game.
I can click "OK" and continue normaly to the game though so that's not really a problem.
Complete error message:
"An error occurred running the Unity content on this page. See your browser JavaScript console for more info. The error was:Error: XDR encoding failure"