ArgumentExcept Unity5 Error input axis horizontal is not setup

I'm trying to follow the "Nightmare " tutorial of the channel by playing nils , my script does not show any error, but my character does not move and Unity 5 shows this error related to the horizontal axis. I checked the Nils video and it does not change anything in Axis , it just shows. So I can not move my character and it goes into the Idle animation. thanks in advance. the error presented by Unity 5

  

ArgumentException: Axis horizontal input is not setup. To change the   input settings use: Edit - > Project Settings - > Input   PlayerMovement.FixedUpdate () (at   Assets / Scripts / Player / PlayerMovement.cs: 37)

follow the code PlayerMovement.cs

using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    //velocidade do jogador
    public float speed = 6f;

    //vetor responspável pelo movimento
    Vector3 movement;          

    //responsável pela animação              
    Animator anim; 

    //responsável pela física do objeto
    Rigidbody playerRigidbody;

    //máscara de chão
    int floorMask;

    //inf para o Raycast
    float camRayLenght = 100f;


        void awake()
    {
        //atribuir a máscara da camada
        floorMask = LayerMask.GetMask("Floor");

        //atribuir as referências
        anim = GetComponent<Animator>();
        playerRigidbody = GetComponent<Rigidbody>();
    }


    void FixedUpdate()
    {
        float h = Input.GetAxisRaw("horizontal");
        float v = Input.GetAxisRaw("vertical");

        Move(h, v);
        Turning();
        Animating(h, v);
    }



    void Move(float h, float v)
    {
        //determina o movimento
        movement.Set(h, 0f, v);

        //normaliza o movimento
        movement = movement.normalized * speed * Time.deltaTime;

        //efetua o movimento no personagem
        playerRigidbody.MovePosition(transform.position + movement);
    }

    //girar o jogador  
    void Turning()
    {
        Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);

        RaycastHit floorHit;

        if (Physics.Raycast(camRay,out floorHit, camRayLenght, floorMask))
        {
            Vector3 playerToMouse = floorHit.point - transform.position;
            playerToMouse.y = 0f;
            Quaternion newRotation = Quaternion.LookRotation(playerToMouse);
            playerRigidbody.MoveRotation(newRotation);

        }

    }
    void Animating(float h, float v)
    {
        bool walking = (h != 0f || v != 0f);
        anim.SetBool("IsWalking", walking);

    }


}

follows the horizontal input picture being reported in the error

I kept following the tutorial and everything is working except for the fact that I can not move and not even the mouse is followed, but now the console shows an error on line 56 that is here:

    //efetua o movimento no personagem
    playerRigidbody.MovePosition(transform.position + movement);