package phpmyadmin (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Andrei]

Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: phpmyadmin (not installed)
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Thu May 12 15:35:23 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-05-11 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: phpmyadmin
Title: package phpmyadmin (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Michal Čihař (nijel)]

It failed to configure because you removed it's dependencies:

dpkg: dbconfig-mysql: dependency problems, but removing anyway as you requested:
 phpmyadmin depends on dbconfig-mysql | dbconfig-no-thanks | dbconfig-common (<< 2.0.0); however:
  Package dbconfig-mysql is to be removed.
  Package dbconfig-no-thanks is not installed.
  Version of dbconfig-common on system is 2.0.4ubuntu1.