NullReferenceException: Object reference not set to an instance of an object

Questions & Answers
1

I know that there are a lot of Answers to this problem already, but I am still very confused on what to do here. When I run my script I get the null reference exception, here is my code:

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

public class GameControl : MonoBehaviour {

public static GameControl control;
public static int health;
public static int XP;
public Text Health;
public Text EXP;

void Awake(){
	Health = GetComponent<Text> ();
	EXP = GetComponent<Text> ();
	if (control == null) {
		DontDestroyOnLoad (gameObject);
		control = this;
	} else if (control != this) {
		Destroy(gameObject);
	}
}
void Update(){
	Health.text = "Health: " + health;
	EXP.text = "XP: " + XP;
}

}

2

The problem is here

Health.text = "Health: " + health ;
EXP.text = "XP: " + XP;

The error occurs because one of the variables Health or EXP has the value null even after assigning them the value. Make sure the gameobject your script is attached to has a Text component. Also, Health and EXP should refer to the same Text object even if the error wouldn’t occur. I don’t know exactly why you assign them the same value. Are you sure you want to do this?