Can you go to your binds.ini and delete it? this issue seems to be caused by a corrupted bind.ini file. restarting the game after deleting it should give you a new fixed bind.ini.

you can find the file in here:

Windows: %appdata%\Godot\app_userdata\Beat Banger\binds.ini

Mac: ~/Library/Application Support/Godot/app_userdata/Beat Banger/binds.ini

Linux/Steam Deck: ~/.local/share/godot/app_userdata/Beat Banger/binds.ini