Fatal error: Uncaught Error: Class 'Symfony\Component\CssSelector\Tests\Parser\Handler\AbstractHandlerTest' not found in E:\xampp\htdocs\vendor\symfony\css-selector\Tests\Parser\Handler\CommentHandlerTest.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\symfony\css-selector\Tests\Parser\Handler\CommentHandlerTest.php on line 19