Error when player get's shot

Hey guys, I made so that my Enemy can shoot me, but when I’m destroyed, this error appears: The object of type “Transform” has been destroyed but you are still trying to access it. The error is in the camera script. Does someone know how I can fix this?

The camera script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraMotor : MonoBehaviour
{
public Transform LookAt;

public float boundX = 0.5f;
public float boundY = 0.5f;
public float boundZ = 0.5f;
public float speed = 0.15f;

private Vector3 desiredPosition;

// Update is called once per frame
void LateUpdate()
{
  Vector3 delta = Vector3.zero;

  float dx = LookAt.position.x - transform.position.x;

  // X Axis
  if (dx > boundX || dx < -boundX)
  {
    if (transform.position.x < LookAt.position.x)
    {
      delta.x = dx - boundX;
    }
    else
    {
      delta.x = dx + boundX;
    }
  }

  float dy = LookAt.position.y - transform.position.y;

  // Y Axis
  if (dy > boundX || dy < -boundY)
  {
    if (transform.position.y < LookAt.position.y)
    {
      delta.y = dy - boundY;
    }
    else
    {
      delta.y = dy + boundY;
    }
  }

  float dz = LookAt.position.z - transform.position.z;

  // Z Axis
  if (dz > boundZ || dz < -boundZ)
  {
    if (transform.position.z < LookAt.position.z)
    {
      delta.z = dz - boundZ;
    }
    else
    {
      delta.z = dz + boundZ;
    }
  }

  // Move the camera
  desiredPosition = transform.position + delta;
  transform.position = Vector3.Lerp (transform.position, desiredPosition, speed);

}

}

This error occurs, because on your Movement Script you are probably still trying to accsess the destroyed Player.

Example:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Movement: MonoBehaviour
{

    //movement logic
   Vector3.move(player)


}

you can fix this by checking if the Player is still “alive”:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Movement: MonoBehaviour
{

     if(player)
     {
        //movement
       Vector3.move(player)
     }
    else
    {
       //do nothing
    }

}