object reference not set to an instance of an object

Hello everyone. this is for a movewithinRange that functions as a way to stop the navmesh from running directly inside of the target with selecting an enemy to attack, as im still pretty new to programming im having a hard time finding why this error is actually occuring in this script. it may also be in another script but i havent figured it out quite yet. Any assistance would be greatly appreciated.
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Debug Log:
NullReferenceException: Object reference not set to an instance of an object
RPG.Combat.Fighter.Update () (at Assets/Scripts/Fighter.cs:18)
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Script

Code (CSharp):

1. using System;
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5. using RPG.Movement;
6. namespace RPG.Combat
7. {
8. public class Fighter : MonoBehaviour
9.  
10.  
11. {
12.     [SerializeField] float weaponRange = 2.0f;
13.     Transform target;
14.  
15.    
16.    
17.     private void Update() {
18.         bool isInRange = Vector3.Distance(transform.position, target.position) < weaponRange;
19.         if (target != null && !isInRange)
20.         {
21.             GetComponent<Mover>().MoveTo(target.position);
22.         }
23.         else
24.         {
25.             GetComponent<Mover>().Stop();
26.         }
27.  
28.     }
29.     public void Attack(CombatTarget combatTarget)
30.     {
31.         print("Take that you short squat peasent!");
32.         target = combatTarget.transform;
33.  
34.  
35.     }
36.  
37.        
38.     }
39. }

 

False alarm. Fixed it by creating a new method for isInRange.

also i could have just inserted

if (target == null) return;

just incase someone else runs across this.