Fatal error: Uncaught Error: Interface "TYPO3\HtmlSanitizer\InitiatorInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Html/SanitizerInitiator.php:27 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Html/SanitizerInitiator.php on line 27