Fatal error: Uncaught Error: Class 'WP_Customize_Control' not found in E:\www\web\wp-content\themes\twentytwentyone\classes\class-twenty-twenty-one-customize-notice-control.php:17
Stack trace:
#0 {main}
thrown in E:\www\web\wp-content\themes\twentytwentyone\classes\class-twenty-twenty-one-customize-notice-control.php on line 17