Fatal error: Uncaught Error: Class "TYPO3\CMS\Install\Service\Exception" not found in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-install/Classes/Service/Exception/ConfigurationChangedException.php:25 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-install/Classes/Service/Exception/ConfigurationChangedException.php on line 25