System freezes sometimes while using it and signature not signed with a trusted key.package libreoffice-impress 1:6.1.5-0ubuntu0.18.10.1 failed to install/upgrade: trying to overwrite '/usr/lib/libreoffice/program/libOGLTranslo.so', which is also in package libreoffice-ogltrans 1:6.1.5-0ubuntu0.18.10.1

[Richard]

Cannot use alernative driver for nvidia graphic card
Stocked while rebooting.

ProblemType: Package
DistroRelease: Ubuntu 18.10
Package: libreoffice-impress 1:6.1.5-0ubuntu0.18.10.1
ProcVersionSignature: Ubuntu 4.18.0-18.19-generic 4.18.20
Uname: Linux 4.18.0-18-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.3
Architecture: amd64
Date: Sat May 11 19:47:35 2019
DuplicateSignature:
 package:libreoffice-impress:1:6.1.5-0ubuntu0.18.10.1
 Unpacking libreoffice-impress (1:6.1.6-0ubuntu0.18.10.1) over (1:6.1.5-0ubuntu0.18.10.1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-FmMAVa/138-libreoffice-impress_1%3a6.1.6-0ubuntu0.18.10.1_amd64.deb (--unpack):
  trying to overwrite '/usr/lib/libreoffice/program/libOGLTranslo.so', which is also in package libreoffice-ogltrans 1:6.1.5-0ubuntu0.18.10.1
ErrorMessage: trying to overwrite '/usr/lib/libreoffice/program/libOGLTranslo.so', which is also in package libreoffice-ogltrans 1:6.1.5-0ubuntu0.18.10.1
InstallationDate: Installed on 2019-05-10 (0 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
Python3Details: /usr/bin/python3.6, Python 3.6.8, python3-minimal, 3.6.7-1~18.10
PythonDetails: /usr/bin/python2.7, Python 2.7.16, python-minimal, 2.7.15-3
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu5
 apt 1.7.4
SourcePackage: libreoffice
Title: package libreoffice-impress 1:6.1.5-0ubuntu0.18.10.1 failed to install/upgrade: trying to overwrite '/usr/lib/libreoffice/program/libOGLTranslo.so', which is also in package libreoffice-ogltrans 1:6.1.5-0ubuntu0.18.10.1
UpgradeStatus: No upgrade log present (probably fresh install)