void Update()
    {
        Vector3 rayOrigin = playCam.ViewportToWorldPoint(new Vector3(0.0f, 0.0f, 0.0f));
        Vector3 rayDir = playCam.transform.forward;

        Ray ray = new Ray(rayOrigin, rayDir);

        Debug.DrawRay(ray.origin, ray.direction * distance, Color.blue);

        RaycastHit hit;
        if(Physics.Raycast(rayOrigin,rayDir,out hit, distance))
        {
            if(hit.collider.GetComponent<Collider>().tag == "SOMETHING")
            {
                if(Input.GetKeyDown(KeyCode.E))
                {
                    GameObject hitTarget = hit.collider.gameObject;
                    hit.GetComponent<DoorAction>();//////////////에러나는곳
                    
                }
            }
        }    
    }

뭐어떻게해야하는지 모르긋다 ㅠ