Hey, I'm not sure I'm even in the correct ballpark - trying to allow my app to download largish videos from user's OneDrive and G-Drive to app Is it correct to use NSFileCoordinator in this way? How do I report progress as it downloads the video (is it possible?) Is it correct to dismiss the picker like this? anything else wrong (or, like is....any of it correct? :) it's sort of working with my contrived examples (I created new personal G-drive / Onedrive accounts, and copied vids up there), but...when I use a file from our corporate OneDrive, from shared folder, I get: "NSCocoaErrorDomain Code=3328 "The requested operation couldn’t be completed because the feature is not supported." Is this the NSFileProvider extension (Microsoft's) complaining? public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {     guard  let url = urls.first else {       return     }     let isSecurityScoped = url.startAccessingSecurityScopedResource()     print("(#function) - iSecurityScoped = (isSecurityScoped)")     print("(#function) - document at (url)")     let filename = String(UUID().uuidString.suffix(6)) + "_" +  url.lastPathComponent     let newURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0].appendingPathComponent(filename)          let readingIntent = NSFileAccessIntent.readingIntent(with: url, options: .withoutChanges)     fileCoordinator.coordinate(with: [readingIntent], queue: queue) { error in       defer {         if isSecurityScoped {           url.stopAccessingSecurityScopedResource()         }       }       if let error = error {         print("(#function) - (error)")         return       }       let safeURL = readingIntent.url       do {         let fileData = try Data(contentsOf: safeURL)         try fileData.write(to: newURL, options: .atomic)         print("(#function) - SUCCESS - newURL = (newURL)")       } catch {         print("(#function) - NOOOOO - (error)")       }     }     controller.dismiss(animated: true)   }