Fatal error: Uncaught Error: Interface 'Masterminds\HTML5\Parser\EventHandler' not found in /var/www/typo3/vendor/masterminds/html5/src/HTML5/Parser/DOMTreeBuilder.php:26 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/masterminds/html5/src/HTML5/Parser/DOMTreeBuilder.php on line 26