Fatal error: Uncaught Error: Class 'WP_Customize_Setting' not found in /var/www/html/wp-content/plugins/kirki/kirki-packages/util/src/Setting/User_Meta.php:18 Stack trace: #0 {main} thrown in /var/www/html/wp-content/plugins/kirki/kirki-packages/util/src/Setting/User_Meta.php on line 18