Fatal error: Uncaught Error: Interface 'Sabberworm\CSS\CSSElement' not found in C:\Landaweb\webs\serverarcos\vendor\sabberworm\php-css-parser\src\RuleSet\RuleSet.php:26 Stack trace: #0 {main} thrown in C:\Landaweb\webs\serverarcos\vendor\sabberworm\php-css-parser\src\RuleSet\RuleSet.php on line 26