error CS0246: The type or namespace name 'PlayerMotor' could not be found

Question

I'm making up my first game in unity and this error is showing up i don't know if i can use a "using" tag would fix this problem or not and i don't know which one

    using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;

    [RequireComponent(typeof(PlayerMotor))]
    public class PlayerController : MonoBehaviour
    {
        public LayerMask ourMovmentMask;

        Camera cam;
        PlayerMotor motor;
        // Start is called before the first frame update
        void Start()
        {
            cam = Camera.main;
            motor = GetComponent<PlayerMotor>();
        }

        // Update is called once per frame
        void Update()
        {
            if (Input.GetMouseButtonDown(0))
            {
                Ray ray = cam.ScreenPointToRay(Input.mousePosition);
                RaycastHit hit;
                if (Physics.Raycast(ray, out hit, 100, ourMovmentMask))
                {
                    Debug.Log("we hit " + hit.collider.name + " " + hit.point);
                    // move player to what we hit

                    // stop focusing any objects
                }
            }
        }
    }

Answer 1

You require the game object to have a "PlayerMotor" Component.

Did you define a PlayerMotor class? If not then define it, as the compiler can not find the class.

If yes then check if it's in your project directory