Fatal error: Uncaught Error: Interface "TYPO3\CMS\Core\Security\ContentSecurityPolicy\SourceInterface" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Security/ContentSecurityPolicy/SourceKeyword.php:24 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-core/Classes/Security/ContentSecurityPolicy/SourceKeyword.php on line 24