Rotating right arm in viewmodel causes the whole rig to rotate instead

Help and Feedback Art Design Support
#1

Hello,

I’ve made my own custom viewmodel, but the right arm is rotating everything else instead of itself.
Hierarchy:
image

What happens:

I can link the model but, the hierarchy should work for now. Thanks if you can help me.

#2

Nevermind, added a humanoid and changed the name of Root to HumanoidRootPart

image