NullReferenceException Error

Hi,

I am getting the error: NullReferenceException: Object reference not set to an instance of an object.
It occurs when I click on any 3D object while in Play.

Code (CSharp):

1. if (Input.GetMouseButtonDown (0))
2.         {
3.             Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
4.             RaycastHit hit;
5.             if (Physics.Raycast(ray, out hit)){
6.             Transform projectile = Instantiate(missile, new Vector3(0f,0.301f,1.158f), Quaternion.identity) as Transform;
7.             // turn the projectile to hit.point
8.             projectile.LookAt(hit.point);              //Error here
9.  
10.             // accelerate it
11.             projectile.rigidbody.velocity = projectile.forward * 10;                //and error here also
12.             }
13.         }

 

if it's erroring both those lines, then its projectile that is null
check that missile exists and has a transform

 

Thank you, I realized missile was declared as a gameobject and not a transform...