Read it all before you conclude it.

I see that there's an accepted answer. But, there is a better answer or suggestion for you for handling

 NullReferenceException. If you can relate programming in Java language like me,

  you can prevent from sending a null error by using the try-catch block. Try it

  for yourself! ;-)

If you're using in C#, check if you have using System; at the top of your script

  file. If not, add it. Now, you can use all sorts of Exception classes while try-

catching a line of code.

If your're using Javascript, use import System;

Here's an example:

using System; // --> This exact line of code. That's it.
using UnityEngine;

public class Test : MonoBehaviour {

    public GameObject player; // --> Example to check if there's a null 

content;

    public void Update() {

        // You may now catch null reference here.
        try {

            player.transform.Translate(0, 0, 2);

        } catch(NullReferenceException e) { // --> You may use this type of exception class

        }

    }
 
}

Also remember, you can catch also other exceptions such as

 MissingReferenceException, MissingComponentException,

 IndexOutOfRangeException, or any other exception classes as long as you include

 using System in your script. That is all.

I see that there's an accepted answer. But, there is a better answer or suggestion for you for handling  NullReferenceException. If you can relate programming in Java language like me, you can prevent from sending a null error by using the try-catch block. Try it for yourself! ;-)

If you're using in C#, check if you have using System; at the top of your script file. If not, add it. Now, you can use all sorts of Exception classes while try-catching a line of code.

If your're using UnityScript, use import System;

Here's an example:

using System; // --> This exact line of code. That's it.
using UnityEngine;

public class Test : MonoBehaviour {

    public GameObject player; // --> Example to check if there's a null content;
 
    public void Update() {

        // You may now catch null reference here.
        try {

            player.transform.Translate(0, 0, 2);

        } catch(NullReferenceException e) { // --> You may use this type of exception class

        }

    }
}

Also remember, you can catch also other exceptions such as  MissingReferenceException, MissingComponentException,  IndexOutOfRangeException, or any other exception classes as long as you include  using System in your script. 

That is all.