let picker = YPImagePicker(configuration: config)
self.addChild(picker);
self.view.addSubview(picker.view)
picker.didMove(toParent: self);

picker.didFinishPicking { [unowned picker] items, _ in
// NEVER RETURNS with RAW files. 
            self.selectedItems = items
            /// code 
           picker.dismiss(animated: true, completion: nil)
       } 

with config 

var config = YPImagePickerConfiguration()
       
       config.usesFrontCamera = false
       config.shouldSaveNewPicturesToAlbum = false
       config.startOnScreen = .library
       config.screens = [.library, .photo]
       config.onlySquareImagesFromCamera = false
       config.showsPhotoFilters = false
       
       config.library.mediaType = .photo
       config.library.onlySquare = false
       config.library.isSquareByDefault = false
       
       config.icons.capturePhotoImage = config.icons.capturePhotoImage.withRenderingMode(.alwaysTemplate)