diff --git a/internal/core/src/futures/Future.h b/internal/core/src/futures/Future.h
index 60eb804e96..210429c9ce 100644
--- a/internal/core/src/futures/Future.h
+++ b/internal/core/src/futures/Future.h
@@ -212,11 +212,13 @@ class Future : public IFuture {
                            ready->setValue(LeakyResult<R>(
                                static_cast<int>(e.get_error_code()), e.what()));
                        })
-            .thenError(folly::tag_t<std::exception>{},
-                       [ready = ready_](const std::exception& e) {
-                           ready->setValue(LeakyResult<R>(
-                               milvus::UnexpectedError, e.what()));
-                       });
+            .thenError(
+                folly::tag_t<std::exception>{},
+                [ready = ready_](const std::exception& e) {
+                    ready->setValue(LeakyResult<R>(
+                        milvus::UnexpectedError,
+                        fmt::format("{} :{}", typeid(e).name(), e.what())));
+                });
     }
 
  private:
diff --git a/tests/python_client/testcases/test_search.py b/tests/python_client/testcases/test_search.py
index 09f6ecfca9..1a008acdd2 100644
--- a/tests/python_client/testcases/test_search.py
+++ b/tests/python_client/testcases/test_search.py
@@ -1280,7 +1280,7 @@ class TestCollectionSearchInvalid(TestcaseBase):
                             expr,
                             check_task=CheckTasks.err_res,
                             check_items={"err_code": 65535,
-                                         "err_msg": "query failed: Operator::GetOutput failed"})
+                                         "err_msg": "query failed: N6milvus21ExecOperatorExceptionE :Operator::GetOutput failed"})
 
 
 class TestCollectionSearch(TestcaseBase):