Tried using the standalone and a baked jar in a mod that uses Spinnery and cant find any info. No clue what mod is causing this fully but help is wanted.

https://gist.github.com/CrankySupertoon/dc94555d6cf2ab61a082f508cf93bc92

Just happened to me, too. But in my case, Spinnery works fine by itself. Disabling the Clippy's Tippies mod (which requires Spinnery) allowed the world to load properly. WHY CLIPPY

Fixed in 3.0.56.