线程1：致命错误：意外地发现nil，同时隐式展开一个可选值

Question

我的myImageView出现错误“线程1：致命错误：意外地发现nil，同时隐式展开了Optional值”。我该如何解决？

@IBOutlet weak var myImageView: UIImageView!
}



override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
    let tapGesture = UITapGestureRecognizer()
    tapGesture.addTarget(self, action: #selector(ViewController.openGallery(tapGesture:)))

    //errors are happening on these lines

    myImageView.isUserInteractionEnabled = true
    myImageView.addGestureRecognizer(tapGesture)

线程1：致命错误：在隐式展开一个可选值时意外发现nil