this is what i am presented with in game_options_config.json
{"klass":"Configs::Project::GameOptions","order":["message_speed","message_frame","volume","battle_animation","battle_style","screen_scale","language"]}
I am going to remove the language option since that seems to be what might be causing it looking at the code snippet you have provided.
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And yes, it didn't generate and Error.log file anywhere in my root folder or any location that would seem reasonable to have it.