Fatal error: Uncaught Error: Class "Symfony\Component\CssSelector\Node\AbstractNode" not found in /home/grouugah/learning.group-awd.org/vendor/symfony/css-selector/Node/ClassNode.php:24 Stack trace: #0 {main} thrown in /home/grouugah/learning.group-awd.org/vendor/symfony/css-selector/Node/ClassNode.php on line 24