Fatal error: Uncaught Error: Interface "Symfony\Component\CssSelector\Parser\Handler\HandlerInterface" not found in D:\Apache24\www\dls\back-end\vendor\symfony\css-selector\Parser\Handler\IdentifierHandler.php:30 Stack trace: #0 {main} thrown in D:\Apache24\www\dls\back-end\vendor\symfony\css-selector\Parser\Handler\IdentifierHandler.php on line 30