package libnm-gtk-common 1.2.6-0ubuntu0.16.04.4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

no idea... the system alert says there is a problem. ...

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libnm-gtk-common 1.2.6-0ubuntu0.16.04.4
ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Mon Apr 9 22:08:50 2018
Dependencies:

DuplicateSignature:
 package:libnm-gtk-common:1.2.6-0ubuntu0.16.04.4
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package libnm-gtk-common (--configure):
  package is in a very bad inconsistent state; you should
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2017-12-10 (120 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
IpRoute:
 default via 192.168.1.1 dev wlo1 proto static metric 600
 169.254.0.0/16 dev wlo1 scope link metric 1000
 192.168.1.0/24 dev wlo1 proto kernel scope link src 192.168.1.48 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.26
SourcePackage: network-manager-applet
Title: package libnm-gtk-common 1.2.6-0ubuntu0.16.04.4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.2.6 connected started full enabled enabled enabled enabled enabled