Fatal error: Uncaught Error: Class "Sabberworm\CSS\Value\PrimitiveValue" not found in /srv/www/htdocs/moodle/lib/php-css-parser/Value/CSSString.php:11 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/php-css-parser/Value/CSSString.php on line 11