The situation is during the German-Soviet war. It always crashes at the same date and time, so I don't think it is caused by a surrender event or anything else. I have tried to remove some mods that I think are affecting this mod negatively, but to no avail. If this is a bug in this mod, please fix it ASAP. (I am Japanese and I am sending you a message through a translator called deepl translate. Sorry if there is any mistake in the English text.)