The following NEW packages will be installed:
  libpng12-0
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 116 kB of archives.
After this operation, 285 kB of additional disk space will be used.
Get:1 http://mirrors.edge.kernel.org/ubuntu xenial/main amd64 libpng12-0 amd64 1.2.54-1ubuntu1 [116 kB]
Fetched 116 kB in 1s (217 kB/s)
(Reading database ... 174629 files and directories currently installed.)
Preparing to unpack .../libpng12-0_1.2.54-1ubuntu1_amd64.deb ...
Unpacking libpng12-0:amd64 (1.2.54-1ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1_amd64.deb (--unpack):
 unable to install new version of '/lib/x86_64-linux-gnu/libpng12.so.0': No such file or directory
No apport report written because the error message indicates an issue on the local system
         Errors were encountered while processing:
 /var/cache/apt/archives/libpng12-0_1.2.54-1ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)