Fatal error: Uncaught Error: Class 'WP_Customize_Setting' not found in C:\xampp\htdocs\aszhi\wp-includes\customize\class-wp-customize-filter-setting.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\aszhi\wp-includes\customize\class-wp-customize-filter-setting.php on line 19