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