heads bug not working

[hellori9w2]

Datapack version

data pack not working

Description

i cant really figure this out but i couldnt get a head no matter what! execpt the five normal heads, i couldnt even use nametags for the other heads and i am in 1.21.11 can you fix it

Crashlogs

nothing... its supposedly nothing

Steps to reproduce

please fix this, i tried everything i could on minecraft.

Expected behavior

nothing here either...

Anything else to note?

nothing here either as well...

[MLDEG]

I need the Datapack version and also, do you play on a Vanilla client or server ?