Fatal error: Uncaught Error: Class "Drupal\Core\Access\AccessException" not found in /home/www/drupal8/test/core/modules/workspaces/src/WorkspaceAccessException.php:10 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/workspaces/src/WorkspaceAccessException.php on line 10