HarmonyOS 上传文件PhotoViewPicker，抛出错误

ErrorCode  "14000014" 
ErrorMessage.  "member not exist" 
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这一行代码抛出的错误，这里该如何修改。路径下的视频是没问题的。

asset.get(photoAccessHelper.PhotoKeys.DURATION) as number,
try {
  const photoSelectResult = await new picker.PhotoViewPicker().select({
    MIMEType: picker.PhotoViewMIMETypes.VIDEO_TYPE,
    maxSelectNumber: 1,
  });
  const user_file_uri = photoSelectResult.photoUris[0];
  const app_file_path = getContext().cacheDir + "/" + user_file_uri.split("/").pop();
  const user_file = await fs.open(user_file_uri, fs.OpenMode.READ_ONLY);
  const app_file = await fs.open(app_file_path, fs.OpenMode.CREATE | fs.OpenMode.READ_WRITE);
  await fs.copyFile(user_file.fd, app_file.fd, 0);
  await fs.close(user_file);
  await fs.close(app_file);
  let predicates = new dataSharePredicates.DataSharePredicates();
  predicates.equalTo("uri", user_file_uri);
  let fetchResult = await photoAccessHelper.getPhotoAccessHelper(getContext()).getAssets({
    fetchColumns: [],
    predicates: predicates,
  });
  const asset = await fetchResult.getFirstObject();
  const thumbnail = await asset.getThumbnail();

  const imagePackerApi = image.createImagePacker();
  const thumbnail_file_path = getContext().cacheDir + "/" + "thumbnail.jpg";
  const thumbnail_file = await fs.open(thumbnail_file_path, fs.OpenMode.CREATE | fs.OpenMode.READ_WRITE);
  await imagePackerApi.packToFile(thumbnail, thumbnail_file.fd, {
    format: "image/jpeg",
    quality: 100,
  });
  const message = V2TIMManager.getMessageManager().createVideoMessage(
    app_file_path,
    user_file_uri.split(".").pop(),
    asset.get(photoAccessHelper.PhotoKeys.DURATION) as number,
    thumbnail_file_path
  );
  MessageTestInterfaces.sendMessage(message);
} catch (error) {
  console.error(error);
}
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