corretto bug: errata invocazione dell'agent e elaborazione della risposta

app.py

@@ -4,6 +4,8 @@ import requests
 import inspect
 import pandas as pd
 
+from langchain_core.messages import HumanMessage
+
 # Local imports
 from agent import get_agent
 
@@ -84,8 +86,10 @@ def run_and_submit_all( profile: gr.OAuthProfile | None):
             print(f"Skipping item with missing task_id or question: {item}")
             continue
         try:
-            #submitted_answer = agent(question_text)
-            submitted_answer = agent.invoke(question_text)
+            # submitted_answer = agent(question_text)
+            messages = [HumanMessage(content = question_text)]
+            response = agent.invoke({"messages": messages})
+            submitted_answer = response['messages'][-1].content
             answers_payload.append({"task_id": task_id, "submitted_answer": submitted_answer})
             results_log.append({"Task ID": task_id, "Question": question_text, "Submitted Answer": submitted_answer})
         except Exception as e: