Null Reference: RPG Section 4: 28 - Basic combat

Hey guys, so as the title says I am getting the following error:

NullReferenceException: Object reference not set to an instance of an object
RPG.Combat.Fighter.Update () (at Assets/Scripts/Combat/Fighter.cs:14)

this is the code

using UnityEngine;
using RPG.Movement;

namespace RPG.Combat
{
    public class Fighter : MonoBehaviour
    {
        Transform target;

        private void Update()
        {
            if (target != null)
            {
                GetComponent<Mover>().MoveTo(target.position);
            }

        }

        public void Attack(CombatTarget combatTarget)
        {
            target = combatTarget.transform;
        }
    }
}

if it helps I am at 03:42 timer in that video!

thank you!

I believe this was solved on the Udemy Q&A?