Lutris 'NoneType' object has no attribute 'lower'

HI I am trying to run Magic the gathering arena on my computer. I installed it on Lutris but when I try to run is this message appears ‘NoneType’ object has no attribute ‘lower’. Anybody knows what to do about it? Thanks

Looks like a bug with Lutris, maybe. Try updating your system to make sure you are on the latest version: sudo pacman -Syu

If you still have the issue, you might want to open a bug report upstream. Looks like they’re calling the lower() method (I don’t really know Python, but I assume it makes a string or char lowercase?) on a null value.

Did you fix the problem? If not: Did you install a custom Python version? Does the problem appear on other games as well?