Problems when using with ipad about photo-editor HOT 2 OPEN

func constrain(_ sender: UIBarButtonItem) {
        let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
        if let popoverController = actionSheet.popoverPresentationController {
            ///popoverController.barButtonItem = sender
            popoverController.popoverPresentationController?.sourceView = sender
popoverController.permittedArrowDirections = .down
        }