Created attachment 23380 [details] [review]
libzypp changed it's backend a little bit. The attached patch by firstname.lastname@example.org fixes it.
We moved the upstream bugtracker to GitHub a long time ago. If this issue still affects you please re-create the issue here: https://github.com/hughsie/PackageKit/issues
Sorry for the impersonal message, and fingers crossed your issue no longer happens. Thanks.