Thanks for letting me know, unfortunately I've never encountered this problem before so I can't tell you how to fix it. Looking at the error it looks like for whatever reason the program is having trouble opening the game window.
I'm going to take another stab at solving these errors. And thanks for letting me know it has a problem with Mint, I was planning on installing that anyway.
Just an idea for now though,� based on the terminal output, the error is coming from your theme “Equinox Variance Glass”, does it work if you disable that theme?