Protontricks GUI errors

Protontricks was closed due to the following error:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/protontricks/cli/util.py", line 149, in wrapper
    return cli_func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/protontricks/cli/main.py", line 274, in main
    proton_app = find_proton_app(
                 ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/protontricks/steam.py", line 821, in find_proton_app
    tool_app = find_steam_compat_tool_app(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/protontricks/steam.py", line 610, in find_steam_compat_tool_app
    appinfo_sections = [
                       ^
  File "/usr/lib/python3/dist-packages/protontricks/steam.py", line 540, in iter_appinfo_sections
    raise SyntaxError("Invalid file magic number")
SyntaxError: Invalid file magic number


=============

Please include this entire error message when making a bug report.
Log messages:

Found Steam directory at /home/vince/.steam/debian-installation
Using default Steam Runtime at /home/vince/.steam/debian-installation/ubuntu12_32/steam-runtime
WINETRICKS environment variable is not available. Searching from $PATH.
Found 3 Steam library folders
Steam library folder /media/vince/Steam1/SteamLibrary not found. Protontricks might not have access to the directory.
Currently logged-in Steam user: steve7253
Couldn't find custom shortcuts. Maybe none have been created yet?
Using 'zenity' as GUI provider