Crashes after installing

sudo system-config-samba

(system-config-samba:10277): IBUS-WARNING **: The owner of /home/vadi/.config/ibus/bus is not root!
Traceback (most recent call last):
  File "/usr/sbin/system-config-samba", line 45, in <module>
    mainWindow.MainWindow(debug_flag)
  File "/usr/share/system-config-samba/mainWindow.py", line 121, in __init__
    self.basic_preferences_win = basicPreferencesWin.BasicPreferencesWin(self, self.xml, self.samba_data, self.samba_backend, self.main_window)
  File "/usr/share/system-config-samba/basicPreferencesWin.py", line 97, in __init__
    self.admin = libuser.admin()
SystemError: could not open configuration file `/etc/libuser.conf': No such file or directory

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: system-config-samba 1.2.63-0ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Jun 3 05:50:53 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-03-23 (1897 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: system-config-samba
UpgradeStatus: Upgraded to xenial on 2016-07-29 (309 days ago)