Fatal error: Uncaught Error: Class "Drupal\image\Plugin\migrate\cckfield\d7\ImageField" not found in /home/www/drupal8/test/core/modules/file/src/Plugin/migrate/cckfield/d7/ImageField.php:17 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/file/src/Plugin/migrate/cckfield/d7/ImageField.php on line 17