Update app.py

app.py

@@ -86,6 +86,7 @@ chatbot = gr.Chatbot(height=500)
 with gr.Blocks(css=CSS) as demo:
     gr.HTML(TITLE)
     gr.HTML(DESCRIPTION)
+    gr.DuplicateButton(value="Duplicate Space for private use", elem_classes="duplicate-button")
     gr.ChatInterface(
         fn=stream_chat,
         chatbot=chatbot,