package kaccounts-providers (not installed) failed to install/upgrade: a tentar sobre-escrever '/etc/signon-ui/webkit-options.d/api.twitter.com.conf', que também está no pacote account-plugin-twitter 0.12+16.04.20160126-0ubuntu1

Error during installation of KDE Plasma on Ubuntu 16.04.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kaccounts-providers (not installed)
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Fri Oct 7 01:55:46 2016
ErrorMessage: a tentar sobre-escrever '/etc/signon-ui/webkit-options.d/api.twitter.com.conf', que também está no pacote account-plugin-twitter 0.12+16.04.20160126-0ubuntu1
InstallationDate: Installed on 2016-09-11 (25 days ago)
InstallationMedia: Ubuntu 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: a tentar sobre-escrever '/etc/signon-ui/webkit-options.d/api.twitter.com.conf', que também está no pacote account-plugin-twitter 0.12+16.04.20160126-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)