Fatal error: Uncaught Error: Class "Drupal\migrate_plus\Plugin\migrate\process\EntityLookup" not found in /home/www/drupal8/test/modules/migrate_plus/src/Plugin/migrate/process/EntityGenerate.php:46 Stack trace: #0 {main} thrown in /home/www/drupal8/test/modules/migrate_plus/src/Plugin/migrate/process/EntityGenerate.php on line 46