Fatal error: Uncaught Error: Class "TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication" not found in /var/www/html/dev.hallescherfc.de/vendor/nng/nnhelpers/Classes/Utilities/FrontendUserAuthentication.php:11 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/nng/nnhelpers/Classes/Utilities/FrontendUserAuthentication.php on line 11