1.20.1 Minecraft Flower Generation Error | Together Java | Page 1

Hi,
Im working on a tutorial mod for 1.20.1 and keep getting the following error when trying to load my world

Im looking some guidance as to what Im doing wrong please see the attached Github:
https://github.com/avidbiscuit/tutorialmod-1.20.1

GitHub

init commint for tutorial mod. Contribute to avidbiscuit/tutorialmod-1.20.1 development by creating an account on GitHub.

#1.20.1 Minecraft Flower Generation Error