public static DataViewerCommandResult errorFromExportTraceback(String response) {
    if (response.startsWith("FileNotFoundError") || response.startsWith("OSError")) {
      return makeErrorResult(FILE_NOT_FOUND_ERROR, response);
    }
    else {
      return makeErrorResult(UNHANDLED_ERROR, response);
    }
  }
public static DataViewerCommandResult errorFromExportTraceback(String response)