package kde-l10n-th (not installed) failed to install/upgrade: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/khelpcenter.mo', which is also in package khelpcenter 4:5.6.4-0ubuntu1

Just trying to load Thai language.
I am ordinary user and even find it difficult to understand what is going on here.

ProblemType: Package
DistroRelease: Ubuntu 16.10
Package: kde-l10n-th (not installed)
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
Date: Sun Sep 4 10:30:08 2016
DuplicateSignature:
 package:kde-l10n-th:(not installed)
 Unpacking kde-l10n-th (4:4.10.97-0ubuntu1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-M7K7e0/31-kde-l10n-th_4%3a4.10.97-0ubuntu1_all.deb (--unpack):
  trying to overwrite '/usr/share/locale/th/LC_MESSAGES/khelpcenter.mo', which is also in package khelpcenter 4:5.6.4-0ubuntu1
ErrorMessage: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/khelpcenter.mo', which is also in package khelpcenter 4:5.6.4-0ubuntu1
InstallationDate: Installed on 2016-08-03 (31 days ago)
InstallationMedia: Lubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160731)
RelatedPackageVersions:
 dpkg 1.18.10ubuntu1
 apt 1.3~rc2ubuntu3
SourcePackage: kde-l10n-th
Title: package kde-l10n-th (not installed) failed to install/upgrade: trying to overwrite '/usr/share/locale/th/LC_MESSAGES/khelpcenter.mo', which is also in package khelpcenter 4:5.6.4-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)