system error on login after a power button reboot becuase of disabled reboot/shutown options in the power menu

[Christopher]

i started the update my Lubuntu version to the latest version i waited for the update to finish while i was doing a few other things.. i had to get done to not disturb the computer... after the auto-restart .. i went to the power menu to shut down .. both that and the reboot option were giving me errors and it wasn't letting me perform either operation.. i had to manually shut the computer down from the power button.. i turned it on from there and it gave a me "system error soon after i logged in...

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: unattended-upgrades 0.90ubuntu0.2
ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30
Uname: Linux 4.4.0-53-generic i686
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: i386
Date: Thu Dec 15 13:24:49 2016
DuplicateSignature:
 package:unattended-upgrades:0.90ubuntu0.2
 Installing new version of config file /etc/logrotate.d/unattended-upgrades ...
 dpkg: error processing package unattended-upgrades (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-07-25 (143 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15ubuntu0.2
SourcePackage: unattended-upgrades
Title: package unattended-upgrades 0.90ubuntu0.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2016-12-15 (0 days ago)
mtime.conffile..etc.apt.apt.conf.d.50unattended-upgrades: 2016-12-15T13:27:11.616348

[Launchpad Janitor (janitor)]

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

[Brian Murray (brian-murray)]

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We appreciate the difficulties you are facing, but it would make more sense to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs#When%20not%20to%20file%20a%20bug.