Missing Reference Exception Photon Pun

Question

I am Working on an multiplayer fps game the code throws an missing reference exception in the line given below the error doesn't show up when there is only one player in the room but it starts coming as soon as another player joins the room

private IEnumerator Shoot()
    {
        ammoLeft -= 1;

        animator.SetBool("fire", true);

        RaycastHit hit;
        if (Physics.Raycast(playerCam.position, playerCam.forward, out hit, range))
        {
            //Missing Reference Expection The transform you are accessing is destroyed
            //code works in singleplayer
            if (hit.transform.tag == "Player" && hit.transform != null)
            {
                HealthManager HealthScript = hit.transform.gameObject.GetComponent<HealthManager>();

                if (HealthScript != null)
                {
                    HealthScript.TakeDamage(damage);
                }
            }

        }

        yield return new WaitForSeconds(0.3f);

        animator.SetBool("fire", false);

        if (ammoLeft <= 0f)
        {
            StartCoroutine("Reload");
        }

Error in this line

Physics.Raycast(playerCam.position, playerCam.forward, out hit, range)

I have checked if my camera is null but the problem doesn't fix so I am clueless

 private void Awake()
    {
        if (!pv.IsMine)
        {
            Destroy(ui);
        }

        if (playerCam == null)
        {
            playerCam = FindObjectOfType<Camera>().transform;
        }

        ammoLeft = magazineSize;
        animator = GetComponent<Animator>();
    }

Inspector Window

https://i.stack.imgur.com/Tc69B.png