TryGetPawnOwner always returns none, Set your skeletal mesh and its anim_bp in that BP you created, Open up your Anim_BP and use "Try get pawn owner" and "Cast to Test_BP",Place that actor on the level and you just created and see if the casting is still failing.To get the correct result, get into your AnimGraph BP and from top side chose the actor from the list to debug. Other way, on top label icon (from animBP), there are 2 icons. "Preview Instance" or "No Debug Object Selected". Switch with "No Debug Object Selected", before run the engine, resolve the conflict.