Fatal error: Uncaught Error: Class "TYPO3\CMS\Core\ExpressionLanguage\AbstractProvider" not found in /var/www/html/dev.hallescherfc.de/vendor/nng/nnhelpers/Classes/ExpressionLanguage/TypoScriptConditionProvider.php:13 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/nng/nnhelpers/Classes/ExpressionLanguage/TypoScriptConditionProvider.php on line 13