Fatal error: Uncaught Error: Class "Drupal\system\Plugin\ImageToolkit\Operation\gd\Resize" not found in /home/www/drupal8/test/core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Scale.php:16 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Scale.php on line 16