Fatal error: Uncaught Error: Interface "Drupal\migrate\Plugin\MigratePluginManagerInterface" not found in /home/www/drupal8/test/core/modules/migrate_drupal/src/Plugin/MigrateFieldPluginManagerInterface.php:8 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/migrate_drupal/src/Plugin/MigrateFieldPluginManagerInterface.php on line 8