Fatal error: Uncaught Error: Interface "OCP\Notification\INotifier" not found in /home/.sites/740/site1364/web/cloud/-/apps/survey_client/lib/Notifier.php:29
Stack trace:
#0 {main}
  thrown in /home/.sites/740/site1364/web/cloud/-/apps/survey_client/lib/Notifier.php on line 29