Drill 14: Invalid input — C# components and the update loop

using UnityEngine;

public class PlayerController : MonoBehaviour
{
    [SerializeField] private float speed = 6f;
    private Rigidbody body;
    private Vector3 input;

    private void Awake()
    {
        body = GetComponent<Rigidbody>();
    }

    private void Update()
    {
        input = new Vector3(
            Input.GetAxisRaw("Horizontal"),
            0f,
            Input.GetAxisRaw("Vertical"));
    }

    private void FixedUpdate()
    {
        body.MovePosition(body.position + input.normalized * speed * Time.fixedDeltaTime);
    }
}