Fatal error: Uncaught Error: Interface "TYPO3\CMS\Dashboard\Widgets\ButtonProviderInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-dashboard/Classes/Widgets/Provider/ButtonProvider.php:25 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-dashboard/Classes/Widgets/Provider/ButtonProvider.php on line 25