Update app.py

app.py

@@ -33,7 +33,7 @@ class BasicAgent:
         pattern = re.compile(r"<answer>(.*?)</answer>", re.DOTALL | re.IGNORECASE)
 
         m = pattern.search(agent_answer)
-        return m.group(1) if m else agent_answer
+        return m.group(1) if m else str(agent_answer)
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """