Fatal error: Uncaught Error: Class "TYPO3\CMS\Backend\Template\Components\AbstractControl" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-backend/Classes/Template/Components/Menu/MenuItem.php:23 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-backend/Classes/Template/Components/Menu/MenuItem.php on line 23