Fatal error: Uncaught Error: Class 'Symfony\Component\CssSelector\Node\AbstractNode' not found in C:\xampp7\htdocs\sigpkl\vendor\symfony\css-selector\Node\FunctionNode.php:26 Stack trace: #0 {main} thrown in C:\xampp7\htdocs\sigpkl\vendor\symfony\css-selector\Node\FunctionNode.php on line 26