Fatal error: Uncaught Error: Interface 'TYPO3\HtmlSanitizer\Behavior\AttrValueInterface' not found in /var/www/typo3/vendor/typo3/html-sanitizer/src/Behavior/RegExpAttrValue.php:19 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/typo3/html-sanitizer/src/Behavior/RegExpAttrValue.php on line 19