Fix Null Reference Exception in Unity

Here I have another debugging tutorial on how to fix a NullReferenceException error in Unity. This lesson will teach you more about receiving a Null Reference Exception error. I will teach you when and how one might receive this kind of error and then I will teach you how to fix this error so you are no longer receiving a null reference exception error.

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In this example, I am receiving a NullReferenceException because whenever I left click with my mouse I send out a raycast from the camera to the mouse position is world space. If there is no object for my raycast to hit then it will return a null value and save it into a variable. I then try to get the tag of that variable but because the object is null it throws the Null Reference Exception. You can fix this error by first checking to see if the return hit value is null. If it is null then you will want to do nothing but if it returns a proper value then you can access the tag.

Now you don't always want to just check to see if the value is null. Depending on the circumstance the value of what you are accessing might be required for the logic of your game. In this case, yes, you might not be receiving the NullReferenceException error anymore but your game will also not work properly.

[charlieshrk]

i can't believe all i had to do was make a simple if statement at the beginning of my script and then it would work. thank you so much!

[Dev.X]

You will save my game!! (I doesn’t finished seeing the video, then I will say)

[iangraham]

You have no idea, how badly I needed this video 😅 thanks man! 👍🏼

[nickname_on]

Me: opens a video about Unity Coding in Youtube
Tabnine ad: helo tere

[Dosen]

Just saved my life and my class project,
Thank you so much mate!

[caseykeller]

I Get this error constantly and it will happen even though the program has worked fine in a previous attempt. Could this be a cache thing as well?

[sparshgaming]

I have a big problem i get nullreference exception in my unity project everytime i open it and i get 10 to 15 null exception and when i try to open package manager it shows nullReferenceException: object reference not set to as an instance Plss tell how i fix it?

[Morrisonfam]

hey i am working on a space shooter game i made a ui pause menu the pause menu works in unity but when i build and run the game works fine but the pause menu dose not work at all or it will not show up at all but its all fine in unity so i put script debugging and i get

NullReferenceException: Object reference not set to an instance of an object
at GameManager.Update () [0x00001] in C:\Users\Owner\Desktop\Edds projects\Galaxy Assault 3D

about 1000 times

[turoreal]

Thanks so much dude, you saved my motivation from learning code!

[mayankchauhan]

Sir, when i run scene 2 it's run perfectly but, when i run scene 1 and load scene 2 from scene 1 the this error appear . Please help

[ishpen]

In my code, at the start I say
public Transform player;

Then later I say player.transform.position when doing some positional math using Vector3.Distance
I referenced the variable in the Inspector tab as a Gameobject( player ) transform
And the code works perfectly fine
But I still get the error... please help

[denchua]

Identifier uniqueness violation: 'Name:Mesh Component#120, Type:Mesh'. Multiple Objects with the same name/type are generated by this Importer. There is no guarantee that subsequent imports of this asset will properly re-link to these targets.

[indiandev]

NullReferenceException: Object reference not set to an instance of an object
LevelProgressUI.GetDistance () (at
LevelProgressUI.Start () (at

Sir This Is My Full Error Sir Please Reply...

[XxxNikGaxxX]

So Ive done this when ever i jump, but i dont hear anything

[mohammedjawad]

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

[umarhyatt]

my plan not show in scene whenever its on its show and work in inspecter but not show in scene

[farhannoermuhamad]

it doesn't work, i make a video player and its running without problem but after i press pause button video player get paused but i cant click anything, and i got error : NullReferenceException: Object reference not set to an instance of an object
tombolpause.pausevideo () (at Assets/tombolpause.cs:16) idk why
heres my code :

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.Video;

using UnityEngine.UI;



public class tombolpause : MonoBehaviour {



private VideoPlayer videoPlayer;







public void pausevideo()

{

if (videoPlayer.isPlaying != null)

videoPlayer.Pause();

else

videoPlayer.Play();



}



}

[yathishs]

NullReferenceException: Object reference not set to an instance of an object
PlayerController.Update () (at

[gambikules]

i dont have script reference in debug Console

[jacksonisaac]

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.


This is my Error