fix bug

app.py

@@ -23,10 +23,14 @@ class BasicAgent:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
         messages = [HumanMessage(content=question)]
         print(f"Message = {messages}")
-        #messages = self.graph.invoke({"messages": messages})
-        messages = self.graph.invoke({"messages": messages},config={"callbacks": [langfuse_handler]})
+        messages = self.graph.invoke({"messages": messages})
+        
+        #messages = self.graph.invoke({"messages": messages},config={"callbacks": [langfuse_handler]})
         self.graph.get_graph().draw_mermaid_png()
         answer = messages['messages'][-1].content
+        print(f"second last message : {messages['messages'][-2].content}")
+        print(f"full answer : {answer}")
+              
         return answer[14:]
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):