package grub2-common 2.02~beta2-36ubuntu3.8 failed to install/upgrade: package grub2-common is already installed and configured

trying to update my os

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub2-common 2.02~beta2-36ubuntu3.8
ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 640:0:116:4284704:2017-03-21 16:26:16.450096845 +0000:2017-03-21 16:26:23.250300391 +0000:/var/crash/grub-pc-bin.0.crash
 644:0:116:0:2017-03-21 16:26:23.250300391 +0000:2017-03-21 16:26:23.250300391 +0000:/var/crash/grub-pc-bin.0.upload
 600:0:116:416121:2017-03-20 15:46:56.104900836 +0000:2017-03-20 15:46:57.104900836 +0000:/var/crash/grub2-common.0.crash
 600:0:116:416119:2017-03-20 15:46:56.980877134 +0000:2017-03-20 15:46:56.316750640 +0000:/var/crash/grub-common.0.crash
Date: Mon Mar 20 15:46:57 2017
DuplicateSignature:
 package:grub2-common:2.02~beta2-36ubuntu3.8
 Processing triggers for man-db (2.7.5-1) ...
 dpkg: error processing package grub-common (--configure):
  package grub-common is already installed and configured
ErrorMessage: package grub2-common is already installed and configured
InstallationDate: Installed on 2017-03-01 (19 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-66-generic root=UUID=2b646aae-c176-4366-959a-f25760cf68f4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package grub2-common 2.02~beta2-36ubuntu3.8 failed to install/upgrade: package grub2-common is already installed and configured
UpgradeStatus: Upgraded to xenial on 2017-03-02 (18 days ago)