package gcin 2.8.8+dfsg1-1ubuntu4 failed to install/upgrade: trying to overwrite '/usr/lib/x86_64-linux-gnu/gcin/gcin1.so', which is also in package libgcin:amd64 2.8.8+dfsg1-1ubuntu4

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Preparing to unpack .../13-gcin_2.9.0+eliu-1_amd64.deb ...
Unpacking gcin (2.9.0+eliu-1) over (2.8.8+dfsg1-1ubuntu4) ...
dpkg: error processing archive /tmp/apt-dpkg-install-R1w3GX/13-gcin_2.9.0+eliu-1_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/x86_64-linux-gnu/gcin/gcin1.so', which is also in package libgcin:amd64 2.8.8+dfsg1-1ubuntu4
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Selecting previously unselected package qt5-gtk-platformtheme:amd64.
Preparing to unpack .../14-qt5-gtk-platformtheme_5.12.8+dfsg-0ubuntu1_amd64.deb ...
Unpacking qt5-gtk-platformtheme:amd64 (5.12.8+dfsg-0ubuntu1) ...
Selecting previously unselected package qttranslations5-l10n.
Preparing to unpack .../15-qttranslations5-l10n_5.12.8-0ubuntu1_all.deb ...
Unpacking qttranslations5-l10n (5.12.8-0ubuntu1) ...
Errors were encountered while processing:
 /tmp/apt-dpkg-install-R1w3GX/10-gcin-im-client_2.9.0+eliu-1_amd64.deb
 /tmp/apt-dpkg-install-R1w3GX/13-gcin_2.9.0+eliu-1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: gcin 2.8.8+dfsg1-1ubuntu4
ProcVersionSignature: Ubuntu 5.8.0-40.45~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Jan 28 11:26:15 2021
DuplicateSignature:
 package:gcin:2.8.8+dfsg1-1ubuntu4
 Unpacking gcin-im-client:amd64 (2.9.0+eliu-1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-R1w3GX/10-gcin-im-client_2.9.0+eliu-1_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/x86_64-linux-gnu/gcin/libgcin-im-client.so.1.2.5', which is also in package libgcin:amd64 2.8.8+dfsg1-1ubuntu4
ErrorMessage: trying to overwrite '/usr/lib/x86_64-linux-gnu/gcin/gcin1.so', which is also in package libgcin:amd64 2.8.8+dfsg1-1ubuntu4
InstallationDate: Installed on 2021-01-25 (2 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.4
SourcePackage: gcin
Title: package gcin 2.8.8+dfsg1-1ubuntu4 failed to install/upgrade: trying to overwrite '/usr/lib/x86_64-linux-gnu/gcin/gcin1.so', which is also in package libgcin:amd64 2.8.8+dfsg1-1ubuntu4
UpgradeStatus: No upgrade log present (probably fresh install)