Fatal error: Uncaught Error: Class "Symfony\Component\CssSelector\Node\AbstractNode" not found in /srv/www/sites/public/starter-projects/vendor/symfony/css-selector/Node/NegationNode.php:24 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-projects/vendor/symfony/css-selector/Node/NegationNode.php on line 24