The Referenced Script on this behaviour is missing! error code

my code is


using UnityEngine;

public class MoveCharacter : MonoBehaviour
{
public float MovementSpeed = 1;
public float JumpForce = 1;

private Rigidbody2D _rigidbody;

private void Start()
{
_rigidbody = GetComponent<Rigidbody2D>();
}

private void Update()
{
var movement = Input.GetAxis("Horizontal");
transform.position += new Vector3(movement, 0, 0) * Time.deltaTime * MovementSpeed;

if (Input.GetButtonDown("Jump") && Mathf.Abs(_rigidbody.velocity.y) < 0.001f)
{
_rigidbody.AddForce(new Vector2(0, JumpForce), ForceMode2D.Impulse);
}
}
}
and for some reason when i put this into unity and play it says
The Referenced Script on this behaviour is missing! error code
for some reason??

 

Your class is called MoveCharacter but your file is called MovePlayer. They must match.