Hello! Thanks for dropping a bug report, but I unfortunately can't help you with this error because the traceback is reporting a file that doesn't exist in our game build.
Please make sure that you're downloading the game into its own folder and not mixing it with any other games. And to, of course, not add other rpy files to the game's build. Otherwise errors like this will pop up!
You can try redownloading the game and if a different issue persists, do let us know!