Fatal error: Uncaught Error: Class 'Contao\CoreBundle\Command\Backup\AbstractBackupCommand' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Command/Backup/BackupRestoreCommand.php:24 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Command/Backup/BackupRestoreCommand.php on line 24