Fatal error: Uncaught Error: Interface "TYPO3\CMS\Frontend\ContentObject\DataProcessorInterface" not found in /var/www/html/cwtypo3/packages/wv_site/Classes/DataProcessing/PageDataProcessor.php:28 Stack trace: #0 {main} thrown in /var/www/html/cwtypo3/packages/wv_site/Classes/DataProcessing/PageDataProcessor.php on line 28