Fatal error: Uncaught Error: Class 'TYPO3\CMS\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper' not found in /home/.sites/884/site2951/web/test/luger/typo3conf/ext/news/Classes/ViewHelpers/Social/GravatarViewHelper.php:23
Stack trace:
#0 {main}
  thrown in /home/.sites/884/site2951/web/test/luger/typo3conf/ext/news/Classes/ViewHelpers/Social/GravatarViewHelper.php on line 23