MCreator crashes when creating a world, and existing worlds are corrupted.

Hello! I know this topic has been widely talked about on these forums, but the solution is seeming to be different for everyone. My game launches just fine, but when I try and create a world, it just says "Saving game" and then instantly crashes. The game will not let me join existing worlds either, telling me I need to go on "safe mode" in order to do so. I don't have any extra datapacks or plugins installed either. This problem just suddenly happened out of nowhere, and regenerating my code does not help it. Here is the crash error: 

https://pastebin.com/iyV5sdkn

Any help is very appreciated. Thank you