package proftpd-basic 1.3.5a-1build1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[AAKASH]

unable to install some programs

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: proftpd-basic 1.3.5a-1build1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Thu Apr 28 15:18:55 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-04-24 (3 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: proftpd-dfsg
Title: package proftpd-basic 1.3.5a-1build1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)