Update app.py

app.py

@@ -971,7 +971,7 @@ def answer_question(user_question):
     """
     Send the user input to your LangGraph agent and return the response.
     """
-    result = app.invoke({"messages": user_question})
+    result = safe_app.invoke({"messages": user_question})
     agent_answer = result["output"]
     return agent_answer