How to fix "The object of type 'Transform' has been destroyed but you are still trying to access it." error in Unity - unity3d

Question

Alright, So I'm trying to create a 2.5D side scroll game, and in it I have an enemy shooting me and when the player character gets shot, it gets Destroyed and the scene restarts. Whenever the player gets destroyed, I get the error mentioned. I have no clue how to fix this, but my used code is below. Thank you for the help.
public class DestroyPlayer : MonoBehaviour
{
//Destroys Player Character On Contact
private void OnCollisionEnter(Collision collision)
{
if(collision.gameObject.CompareTag("Player"))
{
Destroy(collision.gameObject);
}
}
}
This is the player spawn script as well:
public class SpawnScript : MonoBehaviour
{
public GameObject player;
public Transform spawnPoint;
//When Player Character is Destroyed, Respawn Player at Point
private void OnCollisionEnter(Collision other)
{
if (other.gameObject.CompareTag("Player"))
{
Scene currentScene = SceneManager.GetActiveScene();
SceneManager.LoadScene(currentScene.name);
}
}
}
The Script in where the error is coming from:
public class TurretControl : MonoBehaviour
{
private Transform _Player;
private float dist;
public float maxRange;
public Transform barrel;
public GameObject _projectile;
public float fireRate, nextShot;
public float cannonBallForce = 40.0f;
void Start()
{
_Player = GameObject.FindGameObjectWithTag("Player").transform;
}
private void Update()
{
dist = Vector3.Distance(_Player.position, transform.position);
if(dist <= maxRange)
{
if(Time.time >= nextShot)
{
nextShot = Time.time + 1f / fireRate;
shoot();
}
}
}
void shoot()
{
GameObject clone = Instantiate(_projectile, barrel.position,transform.rotation);
//Forward force
clone.GetComponent<Rigidbody>().AddForce(-barrel.right * cannonBallForce);
Destroy(clone, 20);
}
}