Fatal error: Uncaught Error: Class 'WP_Customize_Control' not found in /home/clmepl5/public_html/web/app/plugins/simple-css/customize/css-control.php:2 Stack trace: #0 {main} thrown in /home/clmepl5/public_html/web/app/plugins/simple-css/customize/css-control.php on line 2