Running

• Vampirism-1.17.1-1.8.4-beta.1 CurseForge
• EpicFightMod-17.0.6

Equip vampirism:vampire_clothing_crown, switch to 3rd person. Crash with ArrayIndexOutOfBoundsException exception
Crash report (from my dev env): https://gist.github.com/maxanier/3d25858cefc928a78cb798ce31e7a7d1
Original issue: TeamLapen/Vampirism#1024

I am not sure what happens here.
Related Vampirism class: https://github.com/TeamLapen/Vampirism/blob/8f947f7ed3a177fe3cd18f0d970388515191adfe/src/main/java/de/teamlapen/vampirism/client/model/armor/ClothingCrownModel.java
Super class: https://github.com/TeamLapen/Vampirism/blob/8f947f7ed3a177fe3cd18f0d970388515191adfe/src/main/java/de/teamlapen/vampirism/client/model/armor/VampirismArmorModel.java

When I add hierarchy to my model (add the parts (LEFT, RIGHT, ...) not to the root part definition but to the head part (mesh.getRoot().getChild("head")) it still crashes (with index 720 instead of 84).

Do you have an idea why this might be happening and if it can be fixed on your side or my side?