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

[Woodzy]

i keep getting this error even after uninstalling muddleftp (using --purge)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: muddleftpd (not installed)
ProcVersionSignature: Ubuntu 4.8.0-54.57~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-54-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
Date: Sat Jun 17 08:19:15 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2017-06-15 (2 days ago)
InstallationMedia: Lubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: muddleftpd
Title: package muddleftpd (not installed) failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)