I need help to make my field readonly.

Unity Engine
1

I’ve not run into this error before.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class BackgroundScroller : MonoBehaviour
{
    public Transform BG1, BG2;
    public float scrollSpeed;
    private float bgWidth;
    //   You're at 7:40 on https://www.udemy.com/spaceshooter/learn/lecture/12975402#content
}

Anyway, it’s telling me to make my file read only. Any clue what’s going on?

2

File? Or Field? Also, what’s telling you to make it read-only?