I keep getting this error and I don't know what to do

Questions & Answers
1

I keep getting this error and I don’t understand it:

NullReferenceException: Object reference not set to an instance of an object
SpawnScenery+$MakebigRock$31+$.MoveNext () (at Assets/SpawnScenery.js:18)
UnityEngine.MonoBehaviour:StartCoroutine_Auto(IEnumerator)
SpawnScenery:Update() (at Assets/SpawnScenery.js:6)

It refers to this script that I have named SpawnScenery:

var bigRock: GameObject;

var big : boolean = true;

function Update () {	 if(big) { MakebigRock(); }}

//-------------------------------------------------------------------------------------------------------------------------------------//
//SCENERY
//-------------------------------------------------------------------------------------------------------------------------------------//
function MakebigRock()
{
		
		//making sure we dont make too many big rocks
		big = false;		
		
		// making the rocks
		Instantiate( bigRock,  Vector3 (Random.Range(-20.0, -10.0), 0, transform.position.z), transform.rotate);
		Instantiate( bigRock,  Vector3( Random.Range( 10.0,  20.0), 0, transform.position.z), transform.rotate);		

	// wait now
	yield WaitForSeconds(Random.Range(50.0, 70.0)* Time.deltaTime);
	// now create another
	big = true;
}

I have no idea what to do. I don’t see a problem with the code. the object that I am spawning doesn’t have any problems … I don’t know what to do.

Please help

2

At a guess

 Instantiate( bigRock,  Vector3 (Random.Range(-20.0, -10.0), 0, transform.position.z), transform.rotate );

should be

 Instantiate( bigRock,  Vector3 (Random.Range(-20.0, -10.0), 0, transform.position.z), transform.rotation );

transform.rotation

3

That’s it. Thanks!