Ошибка: NullReferenceExeption: Object reference not set to an instance of an object FPSController.Start() и FPSCon

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class FPSController : MonoBehaviour
{
    public float speedMove;
    public float sensivity;
    public float jump;
 
    public float airGravity;
    public float groundGraviry;
 
    public Vector2 clampAngle;
 
    private Transform _transform;
 
    private Vector2 _angle;
 
    private Vector3 _dir;
 
    private float _mouseX;
    private float _mouseY;
 
    private float _vertical;
    private float _horizontal;
 
    private CharacterController _controller;
    private Animator _camAnimator;
    private AudioSource _source;
 
    private float _graviry;
 
    
    void Start(){
        _controller = GetComponent<CharacterController> ();
        _camAnimator = Camera.main.GetComponent<Animator> ();
        _source = GetComponent<AudioSource> ();
 
        _transform = transform;
    }
 
    
    void Update()
    {
        
 
        if (_controller.isGrounded) {
            _vertical = Input.GetAxis ("Vertical");
            _horizontal = Input.GetAxis ("Horizontal");
 
            _graviry = groundGraviry;
 
            _dir = _transform.TransformDirection (_horizontal, 0.0f, _vertical);
            _dir *= speedMove;
 
            if (_vertical != 0.0f || _horizontal != 0.0f) {
                if (!_source.isPlaying) {
                    _source.Play ();
                }
            }
 
            if (Input.GetButtonUp ("Jump")) {
                _dir.y = jump;
            }
        } else {
            _graviry = airGravity;
        }
 
        _dir.y -= _graviry * Time.deltaTime;
        _controller.Move (_dir * Time.deltaTime);
 
 
 
    }
    void LateUpdate (){
        _mouseX = Input.GetAxis ("Mouse X");
        _mouseY = Input.GetAxis ("Mouse Y");
 
        _angle.x -= _mouseY * speedMove;
        _angle.y += _mouseX * speedMove;
 
        _angle.x = Mathf.Clamp (_angle.x, -clampAngle.x, clampAngle.y);
 
        Quaternion rot = Quaternion.Euler (_angle.x, _angle.y,0.0f);
 
        _transform.rotation = rot;
    }
}

_transform = transform;