plasma-discover-dbg 5.5.5-0ubuntu2 (amd64 binary) in ubuntu xenial

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