Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]

Answer 1

I don't know is it bug or something but your labels and other UIs does not initialized automatically when you use custom cell. You should try this in your UICollectionViewController class. It worked for me.

override func viewDidLoad() {
    super.viewDidLoad()

    let nib = UINib(nibName: "", bundle: nil)
    self.collectionView.registerNib(nib, forCellReuseIdentifier: "title")
}