message: fix wrong error info
diff: @@ -103,7 +103,7 @@ void AddVerticesProcessor::doProcess(const cpp2::AddVerticesRequest& req) {
  auto retEnc = encodeRowVal(schema.get(), propNames, props, wRet);
  if (!retEnc.ok()) {
  LOG(ERROR) << retEnc.status();
  - code = writeResultTo(wRet, true);
  + code = writeResultTo(wRet, false);
  break;
  }
  data.emplace_back(std::move(key), std::move(retEnc.value()));
  