Update app.py

app.py

@@ -38,7 +38,7 @@ with gr.Blocks() as demo:
             examples=examples,
             messages=chat_history
         )
-        bot_message =  bot_message.last # Get the last response
+        bot_message =  str(bot_message.last) # Get the last response
         chat_history.append(bot_message)  # Append the bot's message to the chat history
         time.sleep(2)
         return "", chat_history