What does this mean?

[Kevin-Brandon]

My code:

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

public class EnemyMover : MonoBehaviour
{
    [SerializeField] List<Waypoint> path = new List<Waypoint>();
    [SerializeField] [Range(0.0f, 5.0f)] float speed = 1f;

    Enemy enemy;

    // Start is called before the first frame update
    void OnEnable()
    {
       FindPath();
       ReturnToStart();
       StartCoroutine(FollowPath());
    }

    void Start()
    {
        enemy = GetComponent<Enemy>();
    }

    void FindPath()
    {
        path.Clear();

        GameObject parent = GameObject.FindGameObjectWithTag("Path");

        foreach(Transform child in parent.transform)
        {
            path.Add(child.GetComponent<Waypoint>());
        }
    }

    void ReturnToStart()
    {
        transform.position = path[0].transform.position;
    }

    IEnumerator FollowPath()
    {
        foreach(Waypoint waypoint in path)
        {
            Vector3 startPosition = this.transform.position;
            Vector3 endPosition = waypoint.transform.position;
            float travelPercent = 0.0f;

            transform.LookAt(endPosition);

            while(travelPercent < 1.0f)
            {
                travelPercent += Time.deltaTime * speed;
                transform.position = Vector3.Lerp(startPosition, endPosition, travelPercent);
                yield return new WaitForEndOfFrame();
            }
        }

        enemy.StealGold();
        gameObject.SetActive(false);
    }
}

I don’t know why this error is coming up.

[Nina]

Hi KB,

NullReferenceException means that a reference (“link”) to an instance is missing. Double click on the error message to see to which line in your code it is referring. If you exposed a field in the Inspector, make sure that it’s not empty.

If you cannot find the issue, double click on the error message. To which line in your code does it refer?

[Kevin-Brandon]

Thank you Nina I was just so confused because I followed everything exactly and still got the error. I’m going to do more investigation from your response and see what I find.