Fatal error: Uncaught Error: Interface 'TYPO3Fluid\Fluid\Core\ViewHelper\ViewHelperInterface' not found in /var/www/typo3/vendor/typo3fluid/fluid/src/Core/ViewHelper/AbstractViewHelper.php:22 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/typo3fluid/fluid/src/Core/ViewHelper/AbstractViewHelper.php on line 22