Player Animator glitching out - fighting mod development

I’m making a mod where you have these crystals that grant you movesets with custom animations, I’m currently trying to set up the first moves, r_punch (right punch) and l_punch (left punch) but the arms glitches out constantly shifting every tick from the frost to last tick of the animation or maybe it’s between idle animation and punch animation, I get a null pointer exception error too I’m using Player Animator Plugin too and here is my procedure that activates when I click v (right punch key) 

https://imgur.com/gallery/right-punch-key-click-procedure-BDp5LEP#7tyzEVA

And here is the one that handles the animations

https://imgur.com/a/animation-handler-mcreator-Sw89Obm