Fatal error: Uncaught Error: Interface "TYPO3\CMS\Install\Updates\UpgradeWizardInterface" not found in /var/www/html/dev.hallescherfc.de/package-overrides/contacts/Classes/Updates/SlugUpdater.php:23 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/package-overrides/contacts/Classes/Updates/SlugUpdater.php on line 23