Update app.py

app.py

@@ -33,12 +33,12 @@ with gr.Blocks() as demo:
 
     def respond(message,chat_history):
         chat_history.append(message)  # Initialize chat history
-        user_input.append([chat_history[0]])
+        messages = [palm.discuss._make_message(message) for message in chat_history]
 
         bot_message = palm.chat(
             **defaults,
             context=context,
-            messages=user_input
+            messages=messages
         )
         time.sleep(2)
         return "", chat_history