Hi,
Thanks for your interest in my game & taking the time to let me know about the Godot error you encountered.
Can you please confirm what browser and version (was it Firefox?) you tried to use to play the game and/or if it’s a “release” rather than “development”/“nightly”/etc version?
If you’re interested in more details about the issue (which is at this time, not yet fixed), please see my reply here: https://rancidbacon.itch.io/abe-ation#post-9707603
Thanks again for your time! :)