Fatal error: Uncaught Error: Interface 'Sabberworm\CSS\Property\AtRule' not found in /home/invfsanzgeohti/public_html/vendor/sabberworm/php-css-parser/src/Property/CSSNamespace.php:11 Stack trace: #0 {main} thrown in /home/invfsanzgeohti/public_html/vendor/sabberworm/php-css-parser/src/Property/CSSNamespace.php on line 11