Steam Deck in game mode, can't run

[bi0shacker001]

Trying to run F95Checker from Game Mode on the steam deck, even in nested desktop, results in error

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/site-packages/cx_Freeze/initscripts/__startup__.py", line 138, in run
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/site-packages/cx_Freeze/initscripts/console.py", line 17, in run
  File "/home/runner/work/F95Checker/F95Checker/main-debug.py", line 107, in <module>
  File "/home/runner/work/F95Checker/F95Checker/main-debug.py", line 27, in main
  File "/home/runner/work/F95Checker/F95Checker/modules/globals.py", line 186, in <module>
  File "/home/runner/work/F95Checker/F95Checker/modules/globals.py", line 159, in _
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/configparser.py", line 684, in read
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/configparser.py", line 999, in _read
  File "/opt/hostedtoolcache/Python/3.12.4/x64/lib/python3.12/encodings/ascii.py", line 26, in decode
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 115: ordinal not in range(128)

No log files are generated, this was captured by running F95Checker in the terminal. No extra debugging information comes from running the -Debug version.

The paths listed don't appear to reference paths on the host, so I'm unable to perform any additional troubleshooting, and I'm unsure how to bypass the bundled python libraries to test with my system-installed libraries It runs fine in standard desktop mode.