Fatal error: Uncaught Error: Class "WP_Customize_Setting" not found in /home/trendyel/public_html/Dropshipping/wp-includes_bkp/customize/class-wp-customize-custom-css-setting.php:19 Stack trace: #0 {main} thrown in /home/trendyel/public_html/Dropshipping/wp-includes_bkp/customize/class-wp-customize-custom-css-setting.php on line 19