diff --git a/solutions/question_answering_system/quick_deploy/server/src/milvus_helpers.py b/solutions/question_answering_system/quick_deploy/server/src/milvus_helpers.py
index a9385041b..2ce8ef815 100644
--- a/solutions/question_answering_system/quick_deploy/server/src/milvus_helpers.py
+++ b/solutions/question_answering_system/quick_deploy/server/src/milvus_helpers.py
@@ -56,6 +56,7 @@ def insert(self, collection_name, vectors):
         try:
             self.create_collection(collection_name)
             data = [vectors]
+            self.set_collection(collection_name)
             mr = self.collection.insert(data)
             ids =  mr.primary_keys
             self.collection.load()
diff --git a/solutions/question_answering_system/quick_deploy/server/src/mysql_helpers.py b/solutions/question_answering_system/quick_deploy/server/src/mysql_helpers.py
index 6cbeede8f..78d96face 100644
--- a/solutions/question_answering_system/quick_deploy/server/src/mysql_helpers.py
+++ b/solutions/question_answering_system/quick_deploy/server/src/mysql_helpers.py
@@ -42,6 +42,7 @@ def load_data_to_mysql(self, table_name, data):
         # Batch insert (Milvus_ids, img_path) to mysql
         self.test_connection()
         sql = "insert into " + table_name + " (milvus_id,question,answer) values (%s,%s,%s);"
+        self.cursor.execute('SET character_set_connection=utf8;')
         try:
             self.cursor.executemany(sql, data)
             self.conn.commit()
@@ -71,7 +72,10 @@ def search_by_question(self, question, table_name):
             self.cursor.execute(sql)
             results = self.cursor.fetchall()
             LOGGER.debug("MYSQL search by question.")
-            return results[0][0]
+            if results:
+                return results[0][0]
+            else:
+                return results
         except Exception as e:
             LOGGER.error(f"MYSQL ERROR: {e} with sql: {sql}".format(e, sql))
             sys.exit(1)