package kismet 2013.03.R1b-3build1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 6

[Sanad AlArousi]

I am trying to install python. It appeared to me before but I didn't care much for it.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: kismet 2013.03.R1b-3build1
ProcVersionSignature: Ubuntu 4.4.0-130.156-generic 4.4.134
Uname: Linux 4.4.0-130-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Fri Jul 27 00:19:48 2018
DuplicateSignature:
 package:kismet:2013.03.R1b-3build1
 Setting up kismet (2013.03.R1b-3build1) ...
 usermod: user 'snad' does not exist
 dpkg: error processing package kismet (--configure):
  subprocess installed post-installation script returned error exit status 6
ErrorMessage: subprocess installed post-installation script returned error exit status 6
InstallationDate: Installed on 2018-06-30 (26 days ago)
InstallationMedia: Edubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.27
SourcePackage: kismet
Title: package kismet 2013.03.R1b-3build1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 6
UpgradeStatus: Upgraded to xenial on 2018-07-03 (23 days ago)

[Launchpad Janitor (janitor)]

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