package mysql-common 5.7.15-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Andrew]

Using system software updater.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-common 5.7.15-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Wed Sep 14 22:03:17 2016
Dependencies:

DuplicateSignature:
 Setting up mysql-common (5.7.15-0ubuntu0.16.04.1) ...
 update-alternatives: error: alternative path /etc/mysql/my.cnf.fallback doesn't exist
 dpkg: error processing package mysql-common (--configure):
  subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2014-11-25 (658 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Logs.var.log.daemon.log:

Logs.var.log.mysql.error.log:
MySQLConf.etc.mysql.my.cnf:
MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf:
 [mysqld_safe]
 syslog
MySQLVarLibDirListing: ['andy_sandbox', 'ib_buffer_pool', 'ibdata1', 'kompreni', 'ib_logfile1', 'performance_schema', 'sys', 'ib_logfile0', 'chatapp', 'mysql_upgrade_info', 'kaizen', 'auto.cnf', 'people', 'mysql', 'debian-5.7.flag']
PackageArchitecture: all
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic root=UUID=75639d4e-0063-477e-8db3-de68a7dbe101 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: mysql-5.7
Title: package mysql-common 5.7.15-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to xenial on 2016-05-14 (122 days ago)
modified.conffile..etc.mysql.conf.d.mysql.cnf: [deleted]
modified.conffile..etc.mysql.conf.d.mysqldump.cnf: [deleted]
modified.conffile..etc.mysql.my.cnf.fallback: [deleted]

[Andrew (am-public-o)]

Resolved with:
:~$ sudo cp /etc/mysql/my.cnf /etc/mysql/my.cnf.fallback
:~$ sudo apt-get update && sudo apt-get upgrade -y

[Launchpad Janitor (janitor)]

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