How do I make this move camera script work with prefabs even if the previous prefab was destroyed?

I was wondering how I would make this script work with my prefabs. Does anyone know?

Code (CSharp):

1. private Transform playerTransform;
2.     // Start is called before the first frame update
3.     void Start()
4.     {
5.         playerTransform = GameObject.FindGameObjectWithTag("Player").transform;
6.     }
7.  
8.     // Update is called once per frame
9.     void LateUpdate()
10.     {
11.         Vector3 temp = transform.position;
12.  
13.         temp.x = playerTransform.position.x;
14.  
15.         transform.position = temp;
16.     }

 

I'm confused what this has to do with prefabs exactly? When you Instantiate a prefab, the instance is no longer a prefab. It's just a regular GameObject, and it's independent of any other instances you may have created or the prefab itself at that point.

Are you running into a specific error? Can you describe it? Exact error messages would be helpful.

 

MissingReferenceException: The object of type 'Transform' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.