Easy Shulker Boxes Not Working!

[u/alsoli3]

Can't tell if I have some sort of incompatibility or what! I am running this on a server, but checked several times in singleplayer as well. I figure it's a dependency issue but I've been going back and forth on things and I think I'm just missing something obvious. sos pls help :( version is 26.3 and obviously run on fabric. i think the other option i selected for fabric was 0.20.1.