Nested AnimationNodeStateMachine can't have path from parent AnimationNodeStateMachine

Help Animation
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1

Godot Version

4.3

Question

I’m using AnimationTree to handle my animations, but I’m getting an error when I start the animation:

E 0:00:06:0428   _start_children: Root/Nested AnimationNodeStateMachine can't have path from parent AnimationNodeStateMachine.
  <C++ Error>    Method/function failed.
  <C++ Source>   scene/animation/animation_node_state_machine.cpp:387 @ _start_children()

Even with that error, the animation runs normally. My animation tree looks like that:

Animation tree with several animations, including Idle and ComboAttack
Animation tree with several animations, including Idle and ComboAttack844×436 28.6 KB

With the following lines, I start the animation:

animation_tree[str(animation_path)] = actor.face_direction
playback.start(animation_name, true)

The ComboAttack is a StateMachine that goes like this (I’m probably doing it wrong):

nested_state_machine
nested_state_machine993×521 23 KB

All other transitions seem to be running fine.

How do I properly call the animation and get rid of this error?