Fatal error: Uncaught exception Error with message Class 'NotificationCenter\Queue\QueueManager' not found thrown in system/modules/notification_center/config/config.php on line 82
#0 system/modules/core/library/Contao/Config.php(141): include()
#1 system/modules/core/library/Contao/Config.php(108): Contao\Config->initialize()
#2 system/initialize.php(162): Contao\Config::getInstance()
#3 index.php(16): require('/srv/d_efl/home...')
#4 {main}