Hey there, it looks like the core files have been edited in some way - potentially a mod? There is a letter or symbol that the engine is unable to process and output.
I'd recommend removing the mod in question from the directory and then doing a fresh installation of the game just to ensure the core files are restored. Even if a mod isn't present I would suggest doing this anyway as the base game shouldn't contain any letters or symbols like this.
In terms of the mod (if that does turn out to be the cause) it may be worth following this up with the creator as they may have either a new version available or a workaround.