debconf: unable to initialize frontend: Gnome

[dino99]

Confusing upgrade:

output:

Unpacking debconf (1.5.66) over (1.5.65) ...
Setting up debconf (1.5.66) ...
debconf: unable to initialize frontend: Gnome
debconf: (Can't locate Gtk3.pm in @INC (you may need to install the Gtk3 module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.26.1 /usr/local/share/perl/5.26.1 /usr/lib/x86_64-linux-gnu/perl5/5.26 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.26 /usr/share/perl/5.26 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at /usr/share/perl5/Debconf/FrontEnd/Gnome.pm line 151.)
debconf: falling back to frontend: Dialog
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
Selecting previously unselected package fonts-ubuntu.
(Reading database ... 184774 files and directories currently installed.)
Preparing to unpack .../fonts-ubuntu_0.83-1_all.deb ...
Unpacking fonts-ubuntu (0.83-1) ...
Preparing to unpack .../ttf-ubuntu-font-family_1%3a0.83-1_all.deb ...
Unpacking ttf-ubuntu-font-family (1:0.83-1) over (1:0.83-0ubuntu2) ...
Setting up debconf-i18n (1.5.66) ...
Setting up python3-debconf (1.5.66) ...
Processing triggers for man-db (2.8.1-1) ...
Setting up fonts-ubuntu (0.83-1) ...
Processing triggers for fontconfig (2.12.6-0ubuntu1) ...
Setting up ttf-ubuntu-font-family (1:0.83-1) ...

Cant says if the upgrade is good or not.
Needs to run 'sudo dpkg-reconfigure debconf' to set the minimal required.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: debconf 1.5.66
ProcVersionSignature: Ubuntu 4.15.0-11.12-generic 4.15.5
Uname: Linux 4.15.0-11-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Feb 28 20:12:14 2018
EcryptfsInUse: Yes
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: debconf
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

Fixed by:

software-properties (0.96.24.22) bionic; urgency=medium

  * software-properties-gtk: Depend on libgtk3-perl for debconf's GNOME
    backend. Drop previous Recommends on libgtk2-perl. (LP: #1679784)

 -- Jeremy Bicha <email address hidden> Thu, 01 Mar 2018 21:34:59 -0500