Fatal error: Uncaught Error: Interface 'Concrete\Core\File\Image\Thumbnail\ThumbnailerInterface' not found in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/src/File/Image/BasicThumbnailer.php:19 Stack trace: #0 {main} thrown in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/src/File/Image/BasicThumbnailer.php on line 19