swift - PBItemCollectionServicer 连接断开 UIDragInteraction

Question

从 Apple 的拖放 API 中，我只使用 Drag API。我屏幕上加载的所有图像都来自一组图像。当我尝试拖动图像时，一旦完成拖动图像，我就可以看到预览移动了。在控制台上打印以下行“PBItemCollectionServicer 连接已断开”。

下面是我的代码：

   func freestyleImages(images: [UIImage]) {
    if images.count > 0{
        for image in images {
            let randomX = CGFloat.random(in: 10..<50)
            let randomY = CGFloat.random(in: 10..<50)
            let imageView = UIImageView(image: image)
            self.view.addSubview(imageView)
            imageView.isUserInteractionEnabled = true
            imageView.frame = CGRect(x: randomX, y: randomY, width: image.size.width, height: image.size.height)
            
        }
    }
  
}

func dragInteraction(_ interaction: UIDragInteraction, itemsForBeginning session: UIDragSession) -> [UIDragItem] {
    
    let touchedPoint = session.location(in: self.view)
    if let touchedImageView = self.view.hitTest(touchedPoint, with: nil) as? UIImageView {
        let touchedImage = touchedImageView.image
        let itemProvider = NSItemProvider(object: touchedImage!)
        let dragItem = UIDragItem(itemProvider: itemProvider)
        
        dragItem.localObject = touchedImageView
        print(dragItem)
        return [dragItem]
    }
    
    return []
}

func dragInteraction(_ interaction: UIDragInteraction, session: UIDragSession, didEndWith operation: UIDropOperation) {
    print(operation.rawValue)
}

func dragInteraction(_ interaction: UIDragInteraction, previewForLifting item: UIDragItem, session: UIDragSession) -> UITargetedDragPreview? {
    return UITargetedDragPreview(view: item.localObject as! UIView)
}

任何帮助将非常感激