Can anyone tell me what I did wrong?

Question

I've been trying to code a game and it kept on giving me "TypeError: Error #1009" on the output whenever I make my player touch the car.
Here's the .as codes:
package {
  import flash.display.*;
  import flash.events.*;
  import flash.utils.*;
  import Game.*;
  public class TouchALife extends MovieClip
  private var Hearts:Number;
  private var jumping, left, right:Boolean;
  private var speedX, speedY: Number;
  private var platformsArray, heartsArray:Array;
  public function TouchALife()
  public function startGame()
  stage.focus = stage;
  Hearts = 0;
  speedX = 0;
  speedY = 0;
  jumping = false;
  left= false;
  right = false;
  platformsArray = new Array();
  heartsArray = new Array();
  setupGame();
  addEventListener(Event.ENTER_FRAME,update);
  stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownHandler);
  stage.addEventListener(KeyboardEvent.KEY_UP,keyUpHandler);
  private function setupGame()
  //Check for items on the stage and put them into
  //the appropriate array
  for (var i=0; i< MovieClip(root).numChildren; i++)
  var object = MovieClip(root).getChildAt(i);
  if (object is Platform)
  platformsArray.push(object);
  else if (object is Heart)
  heartsArray.push(object);
  private function keyDownHandler(evt:KeyboardEvent)
  if (evt.keyCode == 32) //spacebar
  //Make player jump
  jumping = true;
  else if (evt.keyCode == 37)
  //Move player left
  left = true;
  else if (evt.keyCode == 39)
  //Move player right
  right = true;
  private function keyUpHandler(evt:KeyboardEvent)
  if (evt.keyCode == 37)
  //Stop Moving Left
  left = false;
  else if (evt.keyCode == 39)
  //Stop Moving Right
  right = false;
  public function update(evt:Event)
  //This is the game loop
  //Handle user input
  if (right)
  mcPlayer.moveRight();
  else if (left)
  mcPlayer.moveLeft();
  else
  mcPlayer.stopMoving();
  if (jumping && !mcPlayer.isInAir())
  mcPlayer.jump();
  //reset jump
  jumping = false;
  //Handle game logic
  mcPlayer.update();
  //Check for collision between player and platforms
  if (mcPlayer.isFallingDown())
  for (var i = platformsArray.length - 1; i >= 0; i--)
  if (platformsArray[i].hitTestObject(mcPlayer.hitBox))
  mcPlayer.y = platformsArray[i].y;
  mcPlayer.hitFloor(platformsArray[i]);
  //Exit the loops
  break;
  //Touch the car
  if (mcVehicle.hitTestObject(mcPlayer.hitBox))
  //Hearts += 1;
  gameOver();
  gotoAndPlay("end");
  //Check for collision between player and aliens
  for (i = heartsArray.length - 1; i >= 0; i--)
  if (heartsArray[i].hitTestObject(mcPlayer.hitBox))
  if (mcPlayer.isFallingDown())
  //player jumped on it
  removeChild(heartsArray[i]);
  heartsArray.splice(i,1);
  Hearts += 1;
  else
  //player is hit
  removeChild(heartsArray[i]);
  heartsArray.splice(i,1);
  Hearts += 1;
  //Handle display
  txtHearts.text = String(Hearts);
  private function resetGame()
  mcPlayer.x = 410;
  mcPlayer.y = 575;
  private function gameOver()
  removeEventListener(Event.ENTER_FRAME,update);
  stage.removeEventListener(KeyboardEvent.KEY_DOWN,keyDownHandler);
  stage.removeEventListener(KeyboardEvent.KEY_UP,keyUpHandler);
  }//end class
}//end package
Here's how my .fla timeline looks like
At frame 1:
startGame();
stop ();
So here's what I'm actually planning to do: No matter how many hearts the player decides to collect, as long as they touch the car, there'll be an animation playing after that.
But it's just that when the player touches the car, the type error starts coming out from the Output

Answer 1

  //Touch the car
  if (mcVehicle.hitTestObject(mcPlayer.hitBox))
  //Hearts += 1;
  gameOver();
  gotoAndPlay("end");