kubuntu-notification-helper-dbg 18.10ubuntu1 (s390x binary) in ubuntu cosmic

 This package contains debugging symbols for Kubuntu Notification Helper.
 When Kubuntu Notification Helper crashes, in most cases this package is
 needed to get a backtrace that is useful for developers. If you have
 experienced a Kubuntu Notification Helper crash without this package
 installed, please install it, try to reproduce the problem and fill a bug
 report with a new backtrace attached.