Fatal error: Uncaught Error: Class "TYPO3\CMS\Core\EventDispatcher\EventDispatcher" not found in /var/www/html/cwtypo3/vendor/typo3/cms-adminpanel/Classes/Service/EventDispatcher.php:23 Stack trace: #0 {main} thrown in /var/www/html/cwtypo3/vendor/typo3/cms-adminpanel/Classes/Service/EventDispatcher.php on line 23