package php-memcache 3.0.9~20151130.fdbd46b-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Lojuron Paul]

occured during installation of php7 extensions

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: php-memcache 3.0.9~20151130.fdbd46b-2
ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
Uname: Linux 4.4.0-47-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Thu Nov 17 17:59:33 2016
DuplicateSignature:
 package:php-memcache:3.0.9~20151130.fdbd46b-2
 Setting up php-imagick (3.4.0~rc6-1ubuntu3) ...
 /usr/sbin/phpenmod: 31: .: Can't open /usr/lib/php/php-helper
 dpkg: error processing package php-imagick (--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 2016-08-06 (102 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15
SourcePackage: php-memcache
Title: package php-memcache 3.0.9~20151130.fdbd46b-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)