Can't install 'ubuntu-desktop' on partial upgrade

[Alvin Evert]

Can't install 'ubuntu-desktop'

It was impossible to install a required package. Please report this as a bug using 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.

Not all updates can be installed
Run a partial upgrade, to install as many updates as possible.

The software on this computer is up to date.

There are no upgrades available for your system. The upgrade will now be canceled.

Downloading from ppa.launchpad.net

Failed to download repository information
Check your internet connection.

(Connection is fine.)

itsupport@ajenb:~$ ubuntu-bug ubuntu-release-upgrader-core
itsupport@ajenb:~$ Using PPAPI flash.
 --ppapi-flash-path=/usr/lib/adobe-flashplugin/libpepflashplayer.so --ppapi-flash-version=
Fontconfig warning: "/etc/fonts/fonts.conf", line 146: blank doesn't take any effect anymore. please remove it from your fonts.conf
[11058:11120:1016/085912.972858:ERROR:nss_util.cc(724)] After loading Root Certs, loaded==false: NSS error code: -8018
[11058:11107:1016/085913.004013:ERROR:in_progress_cache_impl.cc(93)] Could not read download entries from file because there was a read failure.
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[11058:11058:1016/085913.157065:ERROR:gpu_process_transport_factory.cc(1019)] Lost UI shared context.
[11058:11058:1016/085918.493711:ERROR:navigation_entry_screenshot_manager.cc(135)] Invalid entry with unique id: 1

(chromium-browser:11058): IBUS-WARNING **: The owner of /home/itsupport/.config/ibus/bus is not itsupport!

(checked owner - it is root)

W:GPG error: http://dl.google.com stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1397BC53640DB551, W:Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-i386/Packages 404 Not Found [IP: 216.58.223.110 80]
, W:Failed to fetch http://ppa.launchpad.net/dajhorn/skype-call-recorder/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
, W:Failed to fetch http://ppa.launchpad.net/vokoscreen-dev/vokoscreen/ubuntu/dists/trusty/main/binary-i386/Packages 403 Forbidden
, E:Some index files failed to download. They have been ignored, or old ones used instead.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.10
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic i686
ApportVersion: 2.14.1-0ubuntu3.29
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Oct 16 08:58:54 2018
InstallationDate: Installed on 2014-05-15 (1614 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)