Update app.py

app.py

@@ -1824,7 +1824,8 @@ with gr.Blocks(css=CUSTOM_CSS, theme=gr.themes.Soft(primary_hue="indigo")) as de
         gr.update(visible=True),   # logout_btn
         gr.update(visible=True),   # avatar_display
         gr.update(visible=True),   # dark_mode_btn
-        gr.update()                # css placeholder (no change)
+        gr.update()                # css placeholder 
+     ]
     )
 
        login_btn.click(