C# CS8803 hatası

public class CharacterMove : MonoBehaviour
{
    // Start is called before the first frame update
    public float moveSpeed;
    private Animator anim;

    private Rigidbody2D rb2d;
    float moveHorizontal;

    public bool facingRight;

    public float jumpForce;
    public bool is Grounded;
    public bool canDoubleJump;


    void Start()
    {
        moveSpeed = 5;
        moveHorizontal = Input.GetAxis("Horizontal");
        anim = GetComponent<Animator>();
        rb2d = GetComponent<Rigidbody2D>();


    }

    // Update is called once per frame
    void Update()
    {
        CharacterMovement();
        CharacterAnimation();
        CharacterAttack();
        CharacterJump();

    }

    void CharacterMovement()
    {
        moveHorizontal = Input.GetAxis("Horizontal");
        rb2d.velocity = new Vector2(moveHorizontal * moveSpeed, rb2d.velocity.y);
    }
    void CharacterAnimation()
    {
        if (moveHorizontal > 0)
        {
            anim.SetBool("isRunning", true);
        }
        if (moveHorizontal == 0)
        {
            anim.SetBool("isRunning", false);
        }
        if (moveHorizontal < 0)
        {
            anim.SetBool("isRunning", true);
        }
        if (facingRight == false && moveHorizontal > 0)
        {
            CharacterFlip();
        }
        if (facingRight == true && moveHorizontal < 0)
        {
            CharacterFlip();
        }
    }

    void CharacterFlip()
    {
        facingRight = !facingRight;
        Vector3 Scaler = transform.localScale;
        Scaler.x *= -1;
        transform.localScale = Scaler;

    }
    void CharacterAttack()
    {
        if (Input.GetKeyDown(KeyCode.E))
        {
            anim.SetTrigger("isAttack");
        }

    }
  }
    void CharacterJump()
{
    if (Input.GetKeyDown(KeyCode.Space))
    {
        anim.SetBool("isJumping", true);
    }
}