Update app.py

app.py

@@ -81,7 +81,7 @@ with gr.Blocks(theme=gr.themes.Monochrome(),css="footer{display:none !important}
         return response # Returning the chat bot response
 
     def return_sent():
-        return gr.Textbox(show_label = False, placeholder = 'message sent, please wait...', container = False)
+        return 'message sent, please wait...'
 
     def return_placeholder():
         return gr.Textbox(value = None, show_label = False, placeholder = initial_message, container = False)