"Accessed None 'CallFunc_FinishSpawningActor_ReturnValue' from node Construction Script in blueprint MyCharacter"

I have a function where I get the mouse cursor position and set the position of an object along the mouse cursor. So every tick it will get the mouse cursor position and do SetActorLocation of my object with the mouse cursor location. But if I end the game, it says in the log

Accessed None 'CallFunc_FinishSpawningActor_ReturnValue' from node Construction Script in blueprint MyCharacter

What can I do to stop that? Thanks!