package med-config 3.0.1ubuntu1 failed to install/upgrade: installed med-config package post-installation script subprocess returned error exit status 30

[Nijat Isazade]

installed trinity, rebooted, launched xfce because trinity didn't show up -> following error

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: med-config 3.0.1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
Uname: Linux 4.15.0-34-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
Date: Sun Sep 30 21:44:04 2018
ErrorMessage: installed med-config package post-installation script subprocess returned error exit status 30
InstallationDate: Installed on 2018-09-25 (5 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.6, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.3ubuntu0.1
SourcePackage: debian-med
Title: package med-config 3.0.1ubuntu1 failed to install/upgrade: installed med-config package post-installation script subprocess returned error exit status 30
UpgradeStatus: No upgrade log present (probably fresh install)