try

app.py

@@ -101,13 +101,14 @@ with gr.Blocks(theme='hmb/amethyst') as demo:
                 """
             )
 
-    chatbot = gr.Chatbot()
-    msg = gr.Textbox(placeholder="Say hi to WrapIT here!")
+  
+    
+chatbot = gr.ChatInterface(respond, type='messages', theme='hmb/amethyst')
+msg = gr.Textbox(placeholder="Say hi to WrapIT here!")
     send = gr.Button("Send")
 
     msg.submit(respond, [msg, chatbot], [msg, chatbot])
     send.click(respond, [msg, chatbot], [msg, chatbot])
 
-chatbot = gr.ChatInterface(respond, type='messages', theme='hmb/amethyst')
 chatbot.launch(debug=True)
 demo.launch()