please tag your mod as client sided for easier management of removing client sided mods from a modpack for server use

I've marked the 1.20.4 and 1.20.1 versions on curseforge.

Anyway.. looks like I need to fix the crash.. I know why it's happening too. Oops!

The mod can actually exist on a server and wont crash, there's safeguards in place. But Yeah I should do that regardless.

but it did crash mine earlier... that's why I reported, but now it works huh demo effect I guess

maybe because I had Yung's Menu Tweaks enabled aswell and the crash just threw your mod at me I guess

double nevermind CurseForge was playing tricks on me,
this is the log of only your mod on server side

Looks like this is fixed in the currently published 1.21 build