after installing gnome3 and without restart (on ubuntu 16.04) I decided to install kde too. during the installation some error occured:

1.package kde-config-telepathy-accounts (not installed) failed to install/upgrade: trying to overwrite '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+16.04.20160126-0ubuntu1

2.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

at the end of bash installation:
.
.
....
Processing 1 added doc-base file...
Errors were encountered while processing:
 /var/cache/apt/archives/kde-config-telepathy-accounts_4%3a15.12.3-0ubuntu1_amd64.deb
 /var/cache/apt/archives/kaccounts-providers_4%3a15.12.3-0ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kde-config-telepathy-accounts (not installed)
ProcVersionSignature: Ubuntu 4.4.0-70.91-generic 4.4.49
Uname: Linux 4.4.0-70-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
Date: Wed Apr 5 18:31:29 2017
DuplicateSignature:
 package:kde-config-telepathy-accounts:(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 '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+16.04.20160126-0ubuntu1
InstallationDate: Installed on 2017-01-17 (78 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15ubuntu0.2
SourcePackage: ktp-accounts-kcm
Title: package kde-config-telepathy-accounts (not installed) failed to install/upgrade: trying to overwrite '/usr/share/accounts/services/google-im.service', which is also in package account-plugin-google 0.12+16.04.20160126-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)