Problem with "'GameObject' has been destroyed but you are still trying to access it."

Hello,

i have a problem with destroying objects.
For example i have a bullet which cast "OnCollisionEnter" a SphereCastAll and than damage all Objects in Range with the Tag "Enemy" by calling their "TakeDamge" function.

Code (csharp):

1.  
2. RaycastHit[] Targets = Physics.SphereCastAll(gameObject.transform.position, 1f, gameObject.transform.up);
3. foreach (RaycastHit rchHit in Targets) {
4.     if (rchHit.collider.tag == "Enemy") {
5.         if (rchHit.collider.gameObject != null) {
6.             rchHit.collider.GetComponent<EnemyAi>().TakeDamage(fDamage);
7.         }
8.     }
9. }
10.  

My problem is, if 2 bullets hits the enemy at the same time and the first one will force the enemy to be destoryed i get this error Message:

Code (csharp):

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

But i check if it is not null

Here is the "TakeDamage" function:

Code (csharp):

1.  
2. public void TakeDamage(float Damage) {
3.   // Do something
4.   Destroy(gameObject);
5. }
6.  

 

Maybe you should put this in your TakeDamage function.

Code (csharp):

1.  
2. public void TakeDamage(float Damage)
3. {
4.     if (gameObject != null)
5.     {    
6.         // Do something  
7.         Destroy(gameObject);
8.     }
9. }
10.  

 

That's it Thank you

 

I had the same issue.

In my case, basically it was due to d&d (drag & drop) an object from hierarchy into the inspector slot. When the object is destroyed, it is not possible to create a new one.

The solution is d&d directly from Prefab folder (or as prefab, in the project tab), not from hierarchy.

 

Thanks

 

thank you so much

 

I just came to this answer two minutes before I read your reply, and that's what solved the problem for me as well.

 

Thanks, mate! I was struggling with this one

 

It worked, Thanks !

 

thank you so much.

 

It worked man thnx

 

Finallyyy!!!!! thank you soo much

 

Thanks a lot!!

 

Muchas gracias!!!!

 

吨thank you！！its very useful

 

i have the same problem, but no one of above solution was efective to me.
in my case, the problem is in the rigidbody2d on player object.
the error appear when i m go to main menu from gameplay then go back to gameply then jump .
The error refference to input system also.

 

There is only ONE solution, and it does NOT involve necro-posting to 11-year-old unrelated threads.

How to fix a NullReferenceException error

https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/

Three steps to success:
- Identify what is null
- Identify why it is null
- Fix that

 

Verifica que el objeto al cual esta llamando no se destruya. Por ejemplo si instancias un objeto dentro de un padre pero su padre se destruye el hijo ira una vez pero la segunda ya no tendrá a donde ir.