Fatal error: Uncaught Error: Class 'TYPO3Fluid\Fluid\Core\Parser\SyntaxTree\AbstractNode' not found in /var/www/typo3/vendor/typo3fluid/fluid/src/Core/Parser/SyntaxTree/ViewHelperNode.php:18 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/typo3fluid/fluid/src/Core/Parser/SyntaxTree/ViewHelperNode.php on line 18