fatal error: unexpectedly found nil while unwrapping an Optional value

[datomnurdin]

I got this error message in ChoosePersonView.swift.

init(frame: CGRect, person: Person, options: MDCSwipeToChooseViewOptions) {

        super.init(frame: frame, options: options)
        self.person = person

        self.imageView.image = self.person.Image! //error here
        self.autoresizingMask = UIViewAutoresizing.FlexibleHeight | UIViewAutoresizing.FlexibleWidth
        UIViewAutoresizing.FlexibleBottomMargin

        self.imageView.autoresizingMask = self.autoresizingMask
        constructInformationView()
    }