Fatal error: Uncaught Error: Class 'Symfony\Component\Form\AbstractExtension' not found in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/form/Extension/Csrf/CsrfExtension.php:24 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/form/Extension/Csrf/CsrfExtension.php on line 24