Issue #3162042 by narendra.rajwar27, owenbush: Class NotFoundHttpException not found (haha)

modules/recurring_events_registration/src/Form/RegistrantForm.php

@@ -14,6 +14,7 @@ use Drupal\Core\Entity\EntityFieldManager;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Cache\CacheTagsInvalidatorInterface;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 /**
  * Form controller for Registrant edit forms.