Merge pull request #15276 from danidoni/fix-undefined-method-rss-secr…

…et-for-group

Fix issue when creating notification with group and RSS

src/api/app/services/notification_service/notifier.rb

@@ -67,7 +67,7 @@ def create_notification_per_subscription(subscription, channel)
     end
 
     def create_notification?(subscriber, channel)
-      return false if subscriber.nil? || subscriber.away? || (channel == :rss && subscriber.rss_secret.blank?)
+      return false if subscriber.nil? || subscriber.away? || (channel == :rss && subscriber.try(:rss_secret).blank?)
       return false unless notifiable_exists?
       return false unless create_report_notification?(event: @event, subscriber: subscriber)