Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/itscm/dev.its.cm/webserivesits/vendor/friendsofsymfony/user-bundle/DependencyInjection/FOSUserExtension.php:22 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/friendsofsymfony/user-bundle/DependencyInjection/FOSUserExtension.php on line 22