The variable target of Tower has not been assigned. What to do?

Question

Unity

I wrote the code so that the tower would shoot and then this:

here is the code:

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

public class Tower : MonoBehaviour
{
    public Transform shootElement;

    public Transform LookAtObj;

    public float dmg = 5;

    public float shootSpeed;

    public GameObject bullet;

    public Transform target;

    public float shootDelay;

    bool IsShoot;


    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        if (target)

        LookAtObj.transform.LookAt(target);

        if (!IsShoot)

        StartCoroutine(shoot());

       

    }

    IEnumerator shoot()
    {
       IsShoot = true;
       yield return new WaitForSeconds(shootDelay);
       GameObject b = GameObject.Instantiate(bullet, shootElement.position, Quaternion.identity) as GameObject;
       b.GetComponent<bulletTower>().target = target;
       IsShoot = false;
    }

}

Answer 1

the target is not assigned, but it is trying to shoot.
b.GetComponent<bulletTower>().target = target;
the problem is in this line, the Bullet Tower component is taken from a certain bullet and in its target field it tries to be assigned to the target from the Tower, judging by the error, which is not assigned