trouble With super.init(backgroundImage: nil, contents: nil)

[Huanqiang]

Hi Sir,
I have an instance of a OnboardingViewController named OnBoardPageViewController on my Storyboard and it is set to be the 'Initial View Controller', followed the example here: #31 (comment)

class OnBoardPageViewController: OnboardingViewController {

    required init?(coder aDecoder: NSCoder) {
        super.init(backgroundImage: nil, contents: nil)      // it's Worry

        self.backgroundImage = UIImage(named: "onBoardBg")
        self.viewControllers = self.generateOnBoardPage()
        self.shouldBlurBackground = true
        self.fadePageControlOnLastPage = true
        self.fadeSkipButtonOnLastPage = true
        self.allowSkipping = true
        self.skipHandler = {
            self.handleOnboardingCompletion()
        }
    }

but，not luck, i meet a trouble:

OnBoardPageManager.swift: 12: 7: fatal error: use of unimplemented initializer 'init(nibName:bundle:)' for class 'PersonalFinance.OnBoardPageViewController'

I've seen people in the past who have this kind of problem, can you help me？