Fatal error: Uncaught Error: Class "Drupal\views\Plugin\views\display\EntityReference" not found in /home/www/drupal8/test/core/modules/entity_reference/src/Plugin/views/display/EntityReference.php:15 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/entity_reference/src/Plugin/views/display/EntityReference.php on line 15