UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs on iOS 9

You can create a popover presentation controller like this also and it may work

- (IBAction)showPopup:(UIButton *)sender {

ViewController *contentViewController = [[ViewController alloc] init];
    contentViewController.preferredContentSize = CGSizeMake(200, 200);
    contentViewController.modalPresentationStyle = UIModalPresentationPopover;

UIPopoverPresentationController *popoverpresentationController = contentViewController.popoverPresentationController;
    popoverpresentationController.delegate = self;
    popoverpresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
    popoverpresentationController.sourceRect = sender.bounds;
    popoverpresentationController.sourceView = sender;
    [self presentViewController:contentViewController animated: YES completion: nil];
}