Fatal error: Uncaught Error: Class "Sabberworm\CSS\CSSList\CSSBlockList" not found in C:\xampp\htdocs\astra-backoffice\vendor\sabberworm\php-css-parser\src\CSSList\Document.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\sabberworm\php-css-parser\src\CSSList\Document.php on line 17