DuplicateEvent

This warning often occurs due to a misunderstanding about the way events are Automatically Cleared.

If you play an UnityEngine.AnimationClip, its Animancer.AnimancerState.Events will be empty so you can add whatever events you want.

But Transitions store their own events, so if you play one then modify its Animancer.AnimancerState.Events you are actually modifying the transition's events. Then if you play the same transition again, you will modify the events again, often leading to the same event being added multiple times.

If that is not the case, you can simply disable this warning. There is nothing inherently wrong with having multiple identical events in the same sequence.