Yeah, both this one and the Steam version...
And I get you! Linux is rarely used haha `^^
Alrighty, I still think I know what the issue is thankfully. I'm going to try and upload a new linux version of the game to here tonight when I get off work and see if that works out for ya. Until then, I'll make the old, 1.00 version of the game available on the store page and we'll see if that works for the time being.
So itch won't let me actually upload the most current update of the game, because it passes the 1.0 GB limit, but I THINK I found the issue with the old linux build.
https://drive.google.com/file/d/1ejfpQaBhVVhLRF5w-RPGjfjDHHxU0KgZ/view?usp=shari...
Ideally, this version of the game should work based on what I know about that error. If it doesn't, please let me know if the 1.00 version worked in any regard, because that's will help inform the next steps i'd need to take. I'm sorry it's been so buggy though.