fix: wrong usage of chat_interface instead of chatbot

app.py

@@ -140,7 +140,7 @@ with gr.Blocks(css=CSS) as demo:
                 """
             )
 
-    chat_interface.like(vote, None, None)
+    chatbot.like(vote, None, None)
     chat_interface.render()
 
 demo.queue(concurrency_count=100, api_open=False).launch(show_api=False) #, share=True)