transform.parent not working i keep getting this error NullReferenceException: Object reference not set to an instance of an object LaserWeapon.Update () (at Assets/SCRIPTS/LaserWeapon.cs:38)

In my game you can pick up a weapon like a laser sniper. I made the laser sniper but the problem is when i put in this line of code if (transform.parent != null && transform.parent.tag == "Player1") and inside put my firing function so the player can only shoot the weapon once they got it in there hands. The firing function worked without that "if " function and i don't know whats wrong heres my script for the laser sniper thx if you could help :D.

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

public class LaserWeapon : MonoBehaviour { public GameObject projectile; public Transform shotPoint;

  private float timeBtwShots;
  public float startTimeBtwShots;
 
 
 
 
 
 
  // Start is called before the first frame update
  void OnCollisionEnter2D(Collision2D coll)
  {
      if (coll.gameObject.name == "Player1")
      {
          transform.parent = coll.gameObject.transform;
 
      }
      if (coll.gameObject.name == "Player2")
      {
          transform.parent = coll.gameObject.transform;
      }
  }
 
  // Update is called once per frame
  private void Update()
  {
 
 
 
      if (transform.parent != null && transform.parent.tag == "Player1") // ****NOT WORKING****
      {
          if (timeBtwShots <= 0)
          {
              if (Input.GetKeyDown(KeyCode.F))
              {
                  Instantiate(projectile, shotPoint.position, transform.rotation);
                  timeBtwShots = startTimeBtwShots;
              }
              else
              {
                  timeBtwShots -= Time.deltaTime;
              }
          }
 
      }
 
 
 
  }

}

Here is the error i'm getting NullReferenceException: Object reference not set to an instance of an object LaserWeapon.Update () (at Assets/SCRIPTS/LaserWeapon.cs:38)

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