Animator not been initialized please help

The animator isn't initialized please help Please give answers with instructions please TY Code:

using UnityEngine; using System.Collections;

public class Player : MonoBehaviour { private Rigidbody2D myRigidBody;

 private Animator myAnimator;

 [SerializeField]
 private float movementSpeed;

 private bool attack;

 private bool facingRight;

 // Use this for initialization
 void Start ()
 {
     facingRight = true;

     myRigidBody = GetComponent<Rigidbody2D>();
     myAnimator = GetComponent<Animator>();
 }

 void update()
 {
     HandleInput();
 }
 
 // Update is called once per frame
 void FixedUpdate ()
 {
     float horizontal = Input.GetAxis("Horizontal");
     
     HandleMovement(horizontal);

     Flip(horizontal);

     HandleAttacks();
 }

 private void HandleMovement(float horizontal)
 {
     myRigidBody.velocity = new Vector2(horizontal * movementSpeed, myRigidBody.velocity.y);

     myAnimator.SetFloat("Speed", Mathf.Abs (horizontal));
 }

 private void HandleAttacks()
 {
     if (attack)
     {
         myAnimator.SetTrigger("attack");
     }
 }

 private void HandleInput()
 {
     if (Input.GetKeyDown(KeyCode.LeftShift))
     {
         attack = true;
     }
 }

 private void Flip(float horizontal)
 {
     if (horizontal > 0 && !facingRight || horizontal < 0 && facingRight)
     {
         facingRight = !facingRight;

         Vector3 thescale = transform.localScale;

         thescale.x *= -1;

         transform.localScale = thescale;
     }

 }

}