Fatal error: Uncaught Error: Class "Sabberworm\CSS\CSSList\CSSBlockList" not found in /srv/www/htdocs/moodle/lib/php-css-parser/CSSList/Document.php:17 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/php-css-parser/CSSList/Document.php on line 17