App Store Connect says "An error has occured. Try again" when I try to create In-App Purchase

I've been trying to create in-app purchases for the last few hours but every time I do, App Store Connect says "An error has occured. Try Again". I was able to create in app purchases yesterday but now this error is showing up. I've tried some of the solutions for related errors. I've tried to use incognito, switched browser from Chrome to Safari and even switched from Mac to laptop but this error still persists. Does anyone know a solution to this?