Fatal error: Uncaught Error: Interface 'Sabberworm\CSS\Property\AtRule' not found in /opt/lampp/htdocs/Insurance-Integration/vendor/sabberworm/php-css-parser/src/Property/Import.php:14 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/Insurance-Integration/vendor/sabberworm/php-css-parser/src/Property/Import.php on line 14