Fatal error: Uncaught Error: Class "Symfony\Component\CssSelector\Node\AbstractNode" not found in D:\Apache24\www\cipla\back-end\vendor\symfony\css-selector\Node\AttributeNode.php:24 Stack trace: #0 {main} thrown in D:\Apache24\www\cipla\back-end\vendor\symfony\css-selector\Node\AttributeNode.php on line 24