Script 'Bitmap Catche' line 393: RuntimeError Occured

I cant start the game and it says failed to load bitmap in “backpack 725” . What do I do?

Redownload the game, you are missing files

okay, thanks

I just got a similar issue but I’ve had the game and used it for ages and never had a problem until now, I haven’t messed with the files at all so I don’t understand.