Fatal error: Uncaught Error: Interface "TYPO3\CMS\Core\SingletonInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Resource/TextExtraction/TextExtractorRegistry.php:22 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Resource/TextExtraction/TextExtractorRegistry.php on line 22