apport-gtk crashed with ImportError in /usr/lib/python3/dist-packages/gi/__init__.py: cannot import name '_gi'

[Gaurav]

.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: apport-gtk 2.20.1-0ubuntu2.18
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Uname: Linux 4.10.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Fri Jan 11 19:08:06 2019
ExecutablePath: /usr/share/apport/apport-gtk
InstallationDate: Installed on 2019-01-04 (9 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
InterpreterPath: /usr/bin/python3.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_IN
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
PythonArgs: ['/usr/share/apport/apport-gtk']
SourcePackage: apport
Title: apport-gtk crashed with ImportError in /usr/lib/python3/dist-packages/gi/__init__.py: cannot import name '_gi'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Sebastien Bacher (seb128)]

Thank you for your bug report. What's the output of those commands?
- dpkg -l | grep python3-gi
- debsums python3-gi
- python3 -c 'import gi'

[Launchpad Janitor (janitor)]

[Expired for apport (Ubuntu) because there has been no activity for 60 days.]