Update app.py

app.py

@@ -16,12 +16,13 @@ class BasicAgent:
         print("LLM Tool-Enhanced Agent initialized.")
 
     def __call__(self, question: str) -> str:
-        try:
-            result = agent_executor.run(question)
-            return result.strip()
-        except Exception as e:
-            print(f"Agent error: {e}")
-            return "I don't know."
+    try:
+        result = agent_executor.invoke({"messages": [HumanMessage(content=question)]})
+        answer = result["messages"][-1].content
+        return answer.strip()
+    except Exception as e:
+        print(f"Agent error: {e}")
+        return "I don't know."
             
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """