Fatal error: Uncaught Error: Class 'Composer\Script\Event' not found in /home/itscm/dev.its.cm/itsgateway/vendor/symfony/flex/src/Event/UpdateEvent.php:16 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsgateway/vendor/symfony/flex/src/Event/UpdateEvent.php on line 16