Fatal error: Uncaught Error: Class 'Symfony\Component\CssSelector\Tests\Node\AbstractNodeTest' not found in E:\xampp\htdocs\vendor\symfony\css-selector\Tests\Node\HashNodeTest.php:17 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\symfony\css-selector\Tests\Node\HashNodeTest.php on line 17