Fatal error: Uncaught Error: Class "Symfony\Component\CssSelector\XPath\Extension\AbstractExtension" not found in C:\www\Apache24\htdocs\agenda-dif\vendor\symfony\css-selector\XPath\Extension\AttributeMatchingExtension.php:27 Stack trace: #0 {main} thrown in C:\www\Apache24\htdocs\agenda-dif\vendor\symfony\css-selector\XPath\Extension\AttributeMatchingExtension.php on line 27