df@poseidon ~> sudo apt update
Hit:1 http://hk.archive.ubuntu.com/ubuntu cosmic InRelease
Hit:2 http://hk.archive.ubuntu.com/ubuntu cosmic-updates InRelease
Hit:3 http://hk.archive.ubuntu.com/ubuntu cosmic-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu cosmic-security InRelease
Hit:5 http://prerelease.keybase.io/deb stable InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
32 packages can be upgraded. Run 'apt list --upgradable' to see them.
df@poseidon ~> sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  libperl5.26:i386
The following NEW packages will be installed:
  libperl5.26:i386
0 upgraded, 1 newly installed, 0 to remove and 32 not upgraded.
2 not fully installed or removed.
Need to get 0 B/3,168 kB of archives.
After this operation, 16.3 MB of additional disk space will be used.
Do you want to continue? [Y/n]
(Reading database ... 390290 files and directories currently installed.)
Preparing to unpack .../libperl5.26_5.26.2-6_i386.deb ...
Unpacking libperl5.26:i386 (5.26.2-6) ...
dpkg: error processing archive /var/cache/apt/archives/libperl5.26_5.26.2-6_i386.deb (--unpack):
 trying to overwrite shared '/usr/share/doc/libperl5.26/changelog.Debian.gz', which is different from other instances of package libperl5.26:i386
Errors were encountered while processing:
 /var/cache/apt/archives/libperl5.26_5.26.2-6_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
df@poseidon ~>