PyGIWarning error message when using ubuntu-bug

[Bill Turner, wb4alm]

Ubuntu 16.04.1 GNOME 3.20 Ubuntu-bug ???

when using the "ubuntu-bug gedit" command to report a problem with gedit, the following message was displayed in the terminal screen after completing the bug report...

ubuntu-bug gedit
/usr/share/apport/apport-gtk:16: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import GLib, Wnck, GdkX11, Gdk

This error message will be displayed after any use of the ubuntu-bug command.

(and "ubuntu-bug ubuntu-bug" should be a valid command. Took a while to determine that ubuntu-bug is part of apport.)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: apport 2.20.1-0ubuntu2.1
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportLog:

ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashReports:
 664:1000:116:0:2016-11-04 06:26:07.927235574 -0400:2016-11-04 06:26:07.927235574 -0400:/var/crash/_usr_bin_update-manager.1000.upload
 640:1000:116:302125:2016-11-04 06:26:04.887287139 -0400:2016-11-04 06:26:07.931235472 -0400:/var/crash/_usr_bin_update-manager.1000.crash
 600:109:116:0:2016-11-04 06:26:46.238292470 -0400:2016-09-14 06:35:54.449242309 -0400:/var/crash/_usr_bin_update-manager.1000.uploaded
CurrentDesktop: GNOME
Date: Fri Nov 4 06:45:10 2016
InstallationDate: Installed on 2014-05-11 (908 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: apport
UpgradeStatus: No upgrade log present (probably fresh install)