Update app.py

app.py

@@ -308,4 +308,6 @@ with gr.Blocks() as app:
         if login(email, password)[0] == "Login successful!" else (gr.update(), gr.update(), gr.update(), "Invalid email or password."),
         [login_email, login_password], [login_page, menu_page, menu_output, login_output]
     )
-    preference.change(lambda pref: filter_menu
+    preference.change(lambda pref: filter_menu(pref), [preference], menu_output)
+
+app.launch()