Ошибка в юнити 3D.

При попытке закинуть скрипт в инспектор игрока выдает ошибку: Can't add script component 'Player' because the script class cannot be found. Make sure that there are no compile errors and that the file name and class name match.
Вот сам скрипт:
using UnityEngine;
public class Player : MonoBehaviour
{
[SerializeField] KeyCode keyOne;
[SerializeField] KeyCode keyTwo;
[SerializeField] Vector3 moveDirection;

private void FixedUpdate()
{
if(input.GetKey(keyOne))
{
GetComponent<Rigidbody>().linearVelocity += moveDirection;
}
if(input.GetKey(keyTwo))
{
GetComponent<Rigidbody>().linearVelocity -= moveDirection;
}
}
}