package libapache2-mod-php7.0 7.0.4-7ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[CEO]

dpkg: error processing package libapache2-mod-php7.0 (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of libapache2-mod-php:
 libapache2-mod-php depends on libapache2-mod-php7.0; however:
  Package libapache2-mod-php7.0 is not configured yet.

dpkg: error processing package libapache2-mod-php (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                          Errors were encountered while processing:
 libapache2-mod-php7.0
 libapache2-mod-php
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libapache2-mod-php7.0 7.0.4-7ubuntu2.1
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
AptOrdering:
 libapache2-mod-php7.0: Install
 libapache2-mod-php: Install
 libapache2-mod-php7.0: Configure
 libapache2-mod-php: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Wed Jun 29 21:45:08 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-06-14 (14 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: php7.0
Title: package libapache2-mod-php7.0 7.0.4-7ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.apache2.mods-available.php7.0.conf: [deleted]
modified.conffile..etc.apache2.mods-available.php7.0.load: [deleted]

[CEO (unity.digital)]

Further investigation revealed that the libapache2-mod-php was not able to install php.load and php.conf into the apache2 available modules at /etc/apache2/mods-available.
The assumption raised that it may due to the corruption of apache2.conf at /etc/apache2/apache2.conf
Replacement of the file did not fixed the problem. Neither reinstallation of Apache2. Therefor, the last option was to purge the apache2, php and libapache2-mod-php.
sudo apt-get remove --purge apache2, php, php7.0, php-common, libapache2-mod-php
This action revealed that the following directories cannot be deleted by the system. It might be due to the corruption of the configuration files:

/etc/apache2/apache2.conf
/etc/php/7.0/apache2/conf.d
/etc/php/7.0/cli/conf.d

Manully removing them and reinstalling the apache2, php, and libapache2-mod-php solved the problem:

sudo rm -r /etc/apache2 /etc/php
sudo apt-get install apache2 php libapache2-mod-php

After this action, the problem has been rectified. The two files php.conf and php.load are successfully installed in /etc/apache2/mods-available. This module is enabled automatically at /etc/apache2/mods-enabled

[CEO (unity.digital)]

Solved

[Launchpad Janitor (janitor)]

[Expired for php7.0 (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

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

[Launchpad Janitor (janitor)]

[Expired for php7.0 (Ubuntu) because there has been no activity for 60 days.]