Fatal error: Uncaught Error: Class "Doctrine\Migrations\Event\MigrationsEventArgs" not found in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/doctrine/migrations/lib/Doctrine/Migrations/Event/MigrationsVersionEventArgs.php:13 Stack trace: #0 {main} thrown in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/doctrine/migrations/lib/Doctrine/Migrations/Event/MigrationsVersionEventArgs.php on line 13