BlueprintNativeEvent crashes randomly

lC3Cq8.png][img]https://i.hizliresim.com/lC3Cq8.png

bool UAbilityVisual::ExecuteVisual(AIlluvialBase* Owner, AIlluvialBase* NewTarget, TArray<AActor*> const& SpawnedActorList, float LifeTime)
{
	AbilityVisual_eventExecuteVisual_Parms Parms;
	Parms.Owner=Owner;
	Parms.NewTarget=NewTarget;
	Parms.SpawnedActorList=SpawnedActorList;
	Parms.LifeTime=LifeTime;

-------> ProcessEvent(FindFunctionChecked(NAME_UAbilityVisual_ExecuteVisual),&Parms);
return !!Parms.ReturnValue;
}

A Blueprint Native event crashes after 3 play of the game in PIE. Debug show this .gen.cpp file and there is no other clue other then this. Can you guide me to right direction. How can I overcome this bug.
FindFunctionChecked is not working sometimes I suppose.

Have you fixed this bug? I meet a similar bug.