Geckolib custom armor crashes game *Fixed

hi, im making a mod with a custom animated chestplate (only the chest plate no other armor pieces) but the game crashes when i open the survival Inventory or press F5. i have tried fixing it on my own but couldnt find a solution. yes i made sure the model names were the same and followed all the steps in the tutorial. i even made an other model to see wat the problem was but that one also crashed. if someone knows a solution please tel me.

oh yeah, here is the crash report: https://pastebin.com/iRBFaNyE

Edit: the latest update fixed the bug