Update app.py

app.py

@@ -19,9 +19,15 @@ class BasicAgent:
         self.graph = build_graph()
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
-        fixed_answer = self.graph.invoke({"messages": messages})
-        print(f"Agent returning fixed answer: {fixed_answer}")
-        return fixed_answer
+         # Wrap the question in a HumanMessage from langchain_core
+        messages = [HumanMessage(content=question)]
+        # The graph.invoke method takes a dictionary with the key "messages"
+        # and returns a dictionary with the processed messages.
+        response_messages = self.graph.invoke({"messages": messages})
+        # The answer is expected to be in the 'content' of the last message.
+        answer = response_messages['messages'][-1].content
+        print(f"Agent full response: {answer}")
+        return answer
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """