Fatal error: Uncaught Error: Class 'Concrete\Core\User\Avatar\StandardAvatar' not found in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/src/User/Avatar/Gravatar.php:6 Stack trace: #0 {main} thrown in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/src/User/Avatar/Gravatar.php on line 6