Во время нажатия Esc камера персонажа продалжает отслеживать мышь, как сделать так что бы при открытии меню камера не двигалась?

я использовал FirstPlayerController что бы управлять передвижением и взглядом камеры, когда стал делать меню заметил что Time.timeScale = 0f не стал влиять на камеру, в коде FirstPlayerController нашел булевую переменную как cameraCanMoove логически посчитал что это остановит камеру, но теперь в консоли вот это: NullReferenceException: Object reference not set to an instance of an object MenuPause.ActivateMenu () (at Assets/1Scripts/MenuPause.cs:51) MenuPause.Update () (at Assets/1Scripts/MenuPause.cs:27)

MenuPause:

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


public class MenuPause : MonoBehaviour
{
    public GameObject menuPaused;
    public GameObject crosshair;
    [SerializeField] KeyCode Pause;
    bool isMenuPaused = false;
    public FirstPersonController FPS;


    void Start()
    {
        menuPaused.SetActive(false);

    }
    void Update()
    {
        ActivateMenu();
    }
    public void ActivateMenu()
    {
        if (Input.GetKeyDown(Pause))
        {
            isMenuPaused = !isMenuPaused;
        }

        if (isMenuPaused)
        {
            menuPaused.SetActive(true);
            crosshair.SetActive(false);
            Cursor.lockState = CursorLockMode.None;
            Time.timeScale = 0f;
            FPS.cameraCanMove = false;

        }
        else
        {
            menuPaused.SetActive(false);
            crosshair.SetActive(true);
            Cursor.lockState = CursorLockMode.Locked;
            Time.timeScale = 1f;
            FPS.cameraCanMove = true;

        }
    }

}

FirstPlayerController:

{
    private Rigidbody rb;

    #region Camera Movement Variables

    public Camera playerCamera;

    public float fov = 60f;
    public bool invertCamera = false;
    public  bool cameraCanMove = true;
    public float mouseSensitivity = 2f;
    public float maxLookAngle = 50f;

    // Crosshair
    public bool lockCursor = true;
    public bool crosshair = true;
    public Sprite crosshairImage;
    public Color crosshairColor = Color.white;

    // Internal Variables
    private float yaw = 0.0f;
    private float pitch = 0.0f;
    private Image crosshairObject;
    private void Update()
    {
        #region Camera

        // Control camera movement
        if (cameraCanMove)
        {
            yaw = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * mouseSensitivity;

            if (!invertCamera)
            {
                pitch -= mouseSensitivity * Input.GetAxis("Mouse Y");
            }
            else
            {
                // Inverted Y
                pitch += mouseSensitivity * Input.GetAxis("Mouse Y");
            }

            // Clamp pitch between lookAngle
            pitch = Mathf.Clamp(pitch, -maxLookAngle, maxLookAngle);

            transform.localEulerAngles = new Vector3(0, yaw, 0);
            playerCamera.transform.localEulerAngles = new Vector3(pitch, 0, 0);        #region Camera Setup

        EditorGUILayout.LabelField("", GUI.skin.horizontalSlider);
        GUILayout.Label("Camera Setup", new GUIStyle(GUI.skin.label) { alignment = TextAnchor.MiddleCenter, fontStyle = FontStyle.Bold, fontSize = 13 }, GUILayout.ExpandWidth(true));
        EditorGUILayout.Space();

        fpc.playerCamera = (Camera)EditorGUILayout.ObjectField(new GUIContent("Camera", "Camera attached to the controller."), fpc.playerCamera, typeof(Camera), true);
        fpc.fov = EditorGUILayout.Slider(new GUIContent("Field of View", "The camera’s view angle. Changes the player camera directly."), fpc.fov, fpc.zoomFOV, 179f);
        fpc.cameraCanMove = EditorGUILayout.ToggleLeft(new GUIContent("Enable Camera Rotation", "Determines if the camera is allowed to move."), fpc.cameraCanMove);

        GUI.enabled = fpc.cameraCanMove;
        fpc.invertCamera = EditorGUILayout.ToggleLeft(new GUIContent("Invert Camera Rotation", "Inverts the up and down movement of the camera."), fpc.invertCamera);
        fpc.mouseSensitivity = EditorGUILayout.Slider(new GUIContent("Look Sensitivity", "Determines how sensitive the mouse movement is."), fpc.mouseSensitivity, .1f, 10f);
        fpc.maxLookAngle = EditorGUILayout.Slider(new GUIContent("Max Look Angle", "Determines the max and min angle the player camera is able to look."), fpc.maxLookAngle, 40, 90);
        GUI.enabled = true;

        fpc.lockCursor = EditorGUILayout.ToggleLeft(new GUIContent("Lock and Hide Cursor", "Turns off the cursor visibility and locks it to the middle of the screen."), fpc.lockCursor);

        fpc.crosshair = EditorGUILayout.ToggleLeft(new GUIContent("Auto Crosshair", "Determines if the basic crosshair will be turned on, and sets is to the center of the screen."), fpc.crosshair);

        // Only displays crosshair options if crosshair is enabled```