Fatal error: Uncaught Error: Interface 'Sabberworm\CSS\Renderable' not found in C:\Apache24\htdocs\vendor\sabberworm\php-css-parser\src\Rule\Rule.php:20 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor\sabberworm\php-css-parser\src\Rule\Rule.php on line 20