Fatal error: Uncaught Error: Interface 'Symfony\Component\CssSelector\Parser\Handler\HandlerInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\css-selector\Parser\Handler\CommentHandler.php:27 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\css-selector\Parser\Handler\CommentHandler.php on line 27