无法识别的选择器发送到实例，在Viewcontroller子视图上点击手势识别器

Question

尝试在子视图中添加点击手势识别器以在购买后删除广告时出现以下错误。我用谷歌搜索，无法找出我做错了什么。

    import UIKit
    import StoreKit
    import OAStackView
    import SnapKit
    import GoogleMobileAds

    class SquaresViewController: UIViewController, SKProductsRequestDelegate, SKPaymentTransactionObserver {

        let defaults = UserDefaults.standard
        let stackView = OAStackView(frame: CGRect.zero)
        let titleView = TitleView(frame: CGRect.zero)
        let bannerView = BannerView(frame: CGRect.zero)
        let removeAdsView = RemoveAdsView(frame: CGRect.zero)

        var squaresCollectionView: UICollectionView!
        var productID: NSString?

        override func viewDidLoad() {

            productID = "5daysubscription"
            super.viewDidLoad()
            SKPaymentQueue.default().add(self)

            view.addSubview(stackView)

            addStackView()
            addTitleView()
            addCollectionView()
            addBannerView()
            addRemoveAdsView()

            removeAdsView.isUserInteractionEnabled = true
            let tap = UITapGestureRecognizer(target: self.removeAdsView, action: #selector(self.handleTap))
            tap.numberOfTapsRequired = 1
            removeAdsView.addGestureRecognizer(tap)

            if (defaults.bool(forKey: "purchased")){

                bannerView.isHidden = true
                removeAdsView.isHidden = true
            }
            else if (!defaults.bool(forKey: "stonerPurchased")){
                print("false")
            }

        }

        func addRemoveAdsView() {

            stackView.addArrangedSubview(removeAdsView)

            removeAdsView.snp.makeConstraints { make in
                make.height.equalTo(view.snp.height).multipliedBy(0.1)
                make.bottom.equalTo(view.snp.bottom)
                make.width.equalTo(stackView.snp.width)
            }
        }

        func handleTap() {

            if (SKPaymentQueue.canMakePayments())
            {
                let productID:NSSet = NSSet(object: self.productID!);
                let productsRequest:SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>);
                productsRequest.delegate = self;
                productsRequest.start();
                print("Fetching Products");
            }else{
                print("Can't make purchases");
            }

        }
    }

继承我的视图控制器：

    import UIKit
    import SnapKit

    class RemoveAdsView: UIView {

        var removeAdsText: UILabel!

        override init(frame: CGRect) {
            super.init(frame: frame)
            self.translatesAutoresizingMaskIntoConstraints = false
            self.backgroundColor = UIColor.gray

            addCustomView()
        }

        required init?(coder aDecoder: NSCoder) {
            fatalError("init(coder:) has not been implemented")
        }

        func addCustomView() {

            removeAdsText = UILabel(frame: CGRect.zero)

            removeAdsText.text = "Tap here to remove ads."
            removeAdsText.textAlignment = .center
            removeAdsText.numberOfLines = 0

            self.addSubview(removeAdsText)
            removeAdsText.translatesAutoresizingMaskIntoConstraints = false

            removeAdsText.snp.makeConstraints { make in
                make.edges.equalTo( self.snp.edges )
            }
        }

    }

子视图：

$( document ).ready(function() {
  $("li:contains('\\135')").html(function () {
    return $(this).html().replace("\\135", "<i     class='fa fa-rocket'></i>"); 
  });
  $("li:contains('\\137')").html(function () {
    return $(this).html().replace("\\137", "<i     class='fa fa-chevron-circle-left'></i>"); 
  });
});

我删除了一些可读性函数（StoreKit和视图中提到的其他函数加载）。谢谢你的帮助。