Fatal error: Uncaught Error: Class 'TYPO3\HtmlSanitizer\Visitor\AbstractVisitor' not found in /var/www/typo3/vendor/typo3/html-sanitizer/src/Visitor/CommonVisitor.php:33 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/typo3/html-sanitizer/src/Visitor/CommonVisitor.php on line 33