code: def error_respond(self, error):
          
          if self.unique_id is None:
              return None
  
          response = JSONRPCErrorResponse()
          response.unique_id = None if self.one_way else self.unique_id
  
          code, msg, data = _get_code_message_and_data(error)
  
          response.error = msg
          response._jsonrpc_error_code = code
          if data:
              response.data = data
          return response
docs: Create an error response to this request.
  
          When processing the request produces an error condition this method can be used to
          create the error response object.
  
          :param error: Specifies what error occurred.
          :type error: str or Exception
          :returns: An error response object that can be serialized and sent to the client.
          :rtype: :py:class:`JSONRPCErrorResponse`