package kaccounts-providers (not installed) failed to install/upgrade: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1

Running Ubuntu Mate 16.04, tried installing Kubuntu-Desktop from Synaptic Package Manager and got this error.
I have connected two external monitors (VGA and HDMI) to my Lenovo B570 Laptop. Nvidia drivers were installed but presently using Intel Graphics interface as Nvidia seems to have problems with dual monitor set up.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kaccounts-providers (not installed)
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Thu Jun 2 16:39:40 2016
DuplicateSignature:
 package:kaccounts-providers:(not installed)
 Unpacking kde-config-telepathy-accounts (4:15.12.3-0ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.12.3-0ubuntu1_amd64.deb (--unpack):
  trying to overwrite '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+16.04.20160126-0ubuntu1
ErrorMessage: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1
InstallationDate: Installed on 2016-05-22 (11 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: kaccounts-providers
Title: package kaccounts-providers (not installed) failed to install/upgrade: trying to overwrite '/etc/signon-ui/webkit-options.d/www.facebook.com.conf', which is also in package account-plugin-facebook 0.12+16.04.20160126-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)