Fatal error: Uncaught Error: Interface "Psr\EventDispatcher\StoppableEventInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Page/Event/ResolveJavaScriptImportEvent.php:23 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Page/Event/ResolveJavaScriptImportEvent.php on line 23