Fatal error: Uncaught Error: Class "Sabberworm\CSS\Parsing\SourceException" not found in /srv/www/htdocs/moodle/lib/php-css-parser/Parsing/UnexpectedTokenException.php:8 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/php-css-parser/Parsing/UnexpectedTokenException.php on line 8