package libpng12-0 1.2.54-1ubuntu1 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64

[eternal falcon]

I have an error on my installation package. I can not force install. It "seems" that my "installed packages have unmet dependencies".
This is the output of the terminal :

sudo apt-get install -f
[sudo] password for ***********:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  libllvm5.0 linux-headers-4.13.0-45 linux-headers-4.13.0-45-generic
  linux-headers-4.4.0-131 linux-headers-4.4.0-131-generic
  linux-image-4.13.0-43-generic linux-image-4.13.0-45-generic
  linux-image-4.4.0-131-generic linux-image-extra-4.13.0-43-generic
  linux-image-extra-4.13.0-45-generic linux-image-extra-4.4.0-131-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libpng12-0
The following packages will be upgraded:
  libpng12-0
1 to upgrade, 0 to newly install, 0 to remove and 89 not to upgrade.
2 not fully installed or removed.
Need to get 0 B/116 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 326539 files and directories currently installed.)
Preparing to unpack .../libpng12-0_1.2.54-1ubuntu1.1_amd64.deb ...
Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1.1) over (1.2.54-1ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb (--unpack):
 trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64
Processing triggers for libc-bin (2.23-0ubuntu10) ...
Errors were encountered while processing:
 /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Thanks for your help !

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libpng12-0 1.2.54-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-32.35~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
AptOrdering:
 libpng12-0: Install
 libpng12-0: Configure
 libpng12-0: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Mon Oct 22 13:24:25 2018
Dependencies:
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu10
 libgcc1 1:6.0.1-0ubuntu1
 zlib1g 1:1.2.8.dfsg-2ubuntu4.1
DpkgHistoryLog:
 Start-Date: 2018-10-22 13:24:22
 Commandline: apt-get install -f
 Requested-By: eternalfalcon (1000)
 Upgrade: libpng12-0:amd64 (1.2.54-1ubuntu1, 1.2.54-1ubuntu1.1)
DpkgTerminalLog:
 Preparing to unpack .../libpng12-0_1.2.54-1ubuntu1.1_amd64.deb ...
 Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1.1) over (1.2.54-1ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb (--unpack):
  trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64
DuplicateSignature:
 package:libpng12-0:1.2.54-1ubuntu1
 Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1.1) over (1.2.54-1ubuntu1) ...
 dpkg: error processing archive /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb (--unpack):
  trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64
ErrorMessage: trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64
InstallationDate: Installed on 2018-05-24 (150 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.27
SourcePackage: libpng
Title: package libpng12-0 1.2.54-1ubuntu1 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libpng12-0/changelog.Debian.gz', which is different from other instances of package libpng12-0:amd64
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.