Update app.py

app.py

@@ -246,7 +246,7 @@ class ChatDocumentQA:
                 response = agent_chain.run(input = message)
                 chat_history.append((message, response))
                 return "", chat_history
-          else:
+            else:
               vectorstore = state["knowledge_base"]
               chat = self._create_conversation_chain(vectorstore)
               # user_ques = {"question": message}