giphyControllerDidCancel not getting called

[raghavAdplay]

Hi, I am trying out this library with swift 4.2. It works fine so far except that giphyControllerDidCancel doesn't get called. giphyControllerDidSelectGif works fine though.

Here's my code.
class DPChatController: UIViewController, SwiftyGiphyViewControllerDelegate{

func giphyControllerDidSelectGif(controller: SwiftyGiphyViewController, item: GiphyItem) {
    
    if let gifDownSized = item.downsizedImage {
        //detailImageView.sd_setImage(with: gifDownSized.url)
    }
    
    // close gif selection controller via delegate. This doesn't work!
    print("Am in Did Select gif")
    //controller.dismiss(animated: true)
    self.navigationController?.popViewController(animated: true)
    self.inputBar.isHidden = false
}

func giphyControllerDidCancel(controller: SwiftyGiphyViewController) {
    print("Am in Did Cancel")
    self.navigationController?.popViewController(animated: true)
    self.inputBar.isHidden = false
}

@IBAction func chooseProfileActions(_ sender: Any) {
messageTxt.resignFirstResponder()
inputBar.isHidden = true
let profileOptions = UIAlertController(title: "Choose options", message: "", preferredStyle: .actionSheet)
profileOptions.addAction(UIAlertAction(title: "Library", style: .default, handler: { (UIAlertAction) in
self.openPhotoLibrary(isPhoto: false)
}))
profileOptions.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (UIAlertAction) in
self.openPhotoLibrary(isPhoto: true)
}))
profileOptions.addAction(UIAlertAction(title: "GIF", style: .default, handler: { (UIAlertAction) in
self.giphy.navigationController?.delegate = self
self.giphy.delegate = self
self.navigationController?.pushViewController(self.giphy, animated: true)
}))
profileOptions.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { (UIAlertAction) in
print("User selected Cancel option")
self.inputBar.isHidden = false
})
}