点击按钮时回调不起作用

问：

我想用我的回调触发按钮点击操作。我也有和.但什么也没发生。我的代码在此闭包中不起作用：presentercoordinator

startViewController.output = { [weak self] action in
            switch action {
            case .registrationButtonTapped:
                self?.showRegistrationViewController()
            case .loginButtonTapped:
                self?.showLoginViewController()
            }
        }

在我的ViewController中，我有：enum

    enum StartViewControllerButton {
     case registrationButtonTapped
     case loginButtonTapped 
}

callback:

var output: ((StartViewControllerButton) -> Void)?

和：selectors

@objc func registrationButtonPressed() {
        startModulPresenter.openNextScreen()
        self.output?(.registrationButtonTapped)
    }

    @objc func loginButtonPressed() {
        startModulPresenter.openNextScreen()
        self.output?(.loginButtonTapped)
    }

我的主讲人

class StartModulPresenter: StartModulPresenterProtocol {
    
    var navigationController: UINavigationController
    var coordinator: CoordinatorProtocol?
    
    //Init
    
    init(navigationController: UINavigationController) {
        self.navigationController = navigationController
        
        coordinator = AuthorizationCoordinator(navigationController: navigationController)
    }
    
    //Functions
    
    func openNextScreen() {
        coordinator?.start()
    }
    
}

我的协调员：

class AuthorizationCoordinator: RegistrationCoordinatorProtocol {
    
    var presenter: PresenterProtocol?
    var navigationController: UINavigationController
    var childCoordinators: [CoordinatorProtocol] = []
    
    //Init
    
    init(navigationController: UINavigationController) {
        self.navigationController = navigationController
    }
    
    func start() {
        presenter = StartModulPresenter(navigationController: navigationController)
        
        let startViewController = StartViewController(startModulPresenter: presenter as! StartModulPresenter)
        
        startViewController.output = { [weak self] action in
            switch action {
            case .registrationButtonTapped:
                self?.showRegistrationViewController()
            case .loginButtonTapped:
                self?.showLoginViewController()
            }
        }
    }
    
    private func showRegistrationViewController() {
        let registrationViewController = RegistrationViewController()
        registrationViewController.view.backgroundColor = .orange
        self.navigationController.pushViewController(registrationViewController, animated: true)
    }
    
    private func showLoginViewController() {
        let loginViewController = LoginViewController()
        loginViewController.view.backgroundColor = .orange
        self.navigationController.pushViewController(loginViewController, animated: true)
    }
}