Fatal error: Uncaught Error: Class "Symfony\Component\CssSelector\XPath\Extension\AbstractExtension" not found in C:\svn\conexerp\vendor\symfony\css-selector\XPath\Extension\HtmlExtension.php:29 Stack trace: #0 {main} thrown in C:\svn\conexerp\vendor\symfony\css-selector\XPath\Extension\HtmlExtension.php on line 29