message: bugfix:object resp has not attribute result
diff: @@ -56,7 +56,6 @@ class PipelineServicer(pipeline_service_pb2_grpc.PipelineServiceServicer):
  resp = pipeline_service_pb2.Response()
  resp.err_no = channel.ChannelDataErrcode.NO_SERVICE.value
  resp.err_msg = "Failed to inference: Service name error."
  - resp.result = ""
  return resp
  resp = self._dag_executor.call(request)
  return resp
  