Animation stransition problem

I have a problem with transitions. I want to make an animation of elevators' doors. When the player enter to the elevators' trigger its trigger the animation to open the doors. When he exits the elevators' trigger it closes the doors. everything is working until this point, the animation stuck on the "closing doors" state and does not go to the default.

here the code for the opening of the doors:

     void OnTriggerEnter2D (Collider2D other)
     {
         if (other.gameObject.tag == "Player")
             ElevatorAnimation.SetTrigger (OpeningDoors);
     }

here the code for the closing:

     void OnTriggerExit2D (Collider2D other)
     {
         if (other.gameObject.tag == "Player")
             ElevatorAnimation.SetTrigger (ClosingDoors);
     }

link for picture