I found a noodle-world datapack that is not working 1.21.9 onwards. can someone please help?

https://www.planetminecraft.com/data-pack/noodle-world-generation-experiment/
this is not my datapack, but i really want to make an up-to-date server with it. it works for 1.21.8 but not 1.21.9 or 10.