Update app.py

app.py

@@ -724,9 +724,14 @@ class BasicAgent:
             state = {
                 "messages": question,
             }
-            response = self.safe_app.invoke(state)
+
+
+            try:
+                response = self.safe_app.invoke(state)
+                agent_answer = response["output"]
+            except:
+                agent_answer = ""
             
-            agent_answer = response["output"]
         else:
             agent_answer = fixed_answer
             # agent_answer = self.agent.run(question)