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