Upgraded mod from 1.12 to 1.16.5, game crashes when I load or a create a world.

I upgraded my mod from version 1.12.2 to 1.16.5 and I am having some issues. I can launch the game without issue, but whenever create a new world or load into one my game crashes. I provided a pastebin link showcasing the console starting at the point when I entered a world. If you need more, let me know and I will supply it.

https://pastebin.com/cFbhyF6W