Collection View IBoutlet crashes

Code Block 
class HomeViewController: UIViewController {
  @IBOutlet weak var typeCollectionView: UICollectionView!
  var type = ["Shirts","Pants","Tshirts"]
   
  override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.
  }
}
extension HomeViewController : UICollectionViewDataSource , UICollectionViewDelegate{
  func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return type.count
  }
   
  func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = typeCollectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! TypeCollectionViewCell
    cell.typeLabel.text = type[indexPath.row]
    return cell
  }
   
   
}