Fatal error: Uncaught Error: Class "Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent" not found in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/symfony/messenger/Event/WorkerMessageReceivedEvent.php:19 Stack trace: #0 {main} thrown in /srv/disk1/2895578/www/whittonphotographicclub.org.uk/concrete/vendor/symfony/messenger/Event/WorkerMessageReceivedEvent.php on line 19