package kde-l10n-th (not installed) failed to install/upgrade: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/htmlsearch.mo', which is also in package khelpcenter 4:5.2.2a-0ubuntu1

update package is too long time and
it shows >200 GB

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: kde-l10n-th (not installed)
ProcVersionSignature: Ubuntu 3.19.0-15.15-lowlatency 3.19.3
Uname: Linux 3.19.0-15-lowlatency x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
Date: Tue Oct 13 10:26:08 2015
DuplicateSignature: package:kde-l10n-th:(not installed):trying to overwrite '/usr/share/locale/th/LC_MESSAGES/htmlsearch.mo', which is also in package khelpcenter 4:5.2.2a-0ubuntu1
ErrorMessage: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/htmlsearch.mo', which is also in package khelpcenter 4:5.2.2a-0ubuntu1
InstallationDate: Installed on 2015-10-13 (0 days ago)
InstallationMedia: Ubuntu-Studio 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: kde-l10n-th
Title: package kde-l10n-th (not installed) failed to install/upgrade: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/htmlsearch.mo', which is also in package khelpcenter 4:5.2.2a-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)