NullReferenceException Error

I recently started getting a “NullReferenceException: Object reference not set to an instance of an object” error on my object spawning script and I have no idea why. This hasn’t happened before and the script worked fine before today. Anyone know what the problem is?
Heres my script:

public var timer : float = 0.0;
public var times : float = 0.0;

var spawning : boolean = false;
var index : int;

//var cars : Rigidbody[] ;
var powerups : Rigidbody[];
var objects : Rigidbody[];
var f1 : Rigidbody;
var powerup1 : Rigidbody;
var object1 : Rigidbody ;
var coin : Rigidbody;

var spawn1 : Transform;
var spawn2 : Transform;
var spawn3 : Transform;

public static var picked : int = 0;

var timerspawn1 : int = 0;
var timerspawn2 : int = 0;
var timerspawn3 : int = 0;

public var Distance : int;
function Start(){
timec2 = PlayerPrefs.GetInt("Timec2",15);
timec3 = PlayerPrefs.GetInt("Timec3",25);
}

function Update () {
timerspawn1 += Time.deltaTime;
timerspawn2 += Time.deltaTime;
timerspawn3 += Time.deltaTime;/// So objects would have time to spawn
times += Time.deltaTime;

 if(!spawning){
  timer += Time.deltaTime;
 }
 if(timer >= 0.1){
  Spawn();
 }
}
 
function Spawn(){
 spawning = true;
 timer = 0;
 var randomPick : int = Mathf.Abs(Random.Range(0,4));
 var location : Transform;
 
 if(randomPick == 1 && timerspawn1 > 1){
  location = spawn1;
  picked = 1;
  timerspawn1 = 0;

 }
 else if(randomPick == 2 && timerspawn2 > 1){
  location = spawn2;
  picked = 2;
  timerspawn1 = 0;
 }
 else if(randomPick == 3 && timerspawn3 > 1){
  location = spawn3;
  picked = 3;
  timerspawn1 = 0;
 }

 
 var prefabs : int = Mathf.Abs(Random.Range(0,5));
 
if(prefabs == 1 ){
         index = Random.Range (0, objects.Length);
         object1 = objects[index];
     object1 = Instantiate(object1, location.position, location.rotation);
     object1.AddForce(Vector3(0,0,100));
}

    if(prefabs == 2 && Random.value > 0.6){
     index = Random.Range (0, powerups.Length);
     powerup1 = powerups[index];
 powerup1 = Instantiate(powerup1, location.position, location.rotation);////for powerups
    powerup1.AddForce(Vector3(0,0,100));
    }
    if(prefabs == 2 && Random.value < 0.6){
    prefabs = 1;
    }
    
    
 if(prefabs == 3 ){//coins//////////////////////////////////
 if(times < timec2){
 var thingToMakess : Rigidbody = Instantiate(coin, location.position, location.rotation);
     thingToMakess.AddForce(Vector3(0,0,100));
    }
   
  }
  
  
  if(prefabs == 4 && Random.value > 0.9){
  yield WaitForSeconds(1);
   var thingToMakerrr : Rigidbody = Instantiate(f1, location.position, location.rotation);
    thingToMakerrr.AddForce(Vector3(0,0,100)); 
    } 
    if(prefabs == 4 && Random.value < 0.9){
    prefabs = 3;
    }

 //halt script for 0.3 seconds before returning to the start of the process
 yield WaitForSeconds(0.3f);
 picked = 0;
 //set spawning back to false so timer may start again
 spawning = false;
}

I think the problem is that you don’t have any Rigidbodies on your ‘objects’ variable. So check that ‘object’ is not empty.