Fatal error: Uncaught Error: Class "OpenCloud\Common\PersistentObject" not found in /app/vendor/rackspace/php-opencloud/lib/OpenCloud/Queues/Resource/Message.php:29 Stack trace: #0 {main} thrown in /app/vendor/rackspace/php-opencloud/lib/OpenCloud/Queues/Resource/Message.php on line 29