package linux-image-4.4.0-64-generic 4.4.0-64.85~14.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

I don't know what's happening

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: linux-image-4.4.0-64-generic 4.4.0-64.85~14.04.1
ProcVersionSignature: Ubuntu 4.4.0-64.85~14.04.1-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
Date: Thu Feb 23 12:39:29 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2016-04-15 (315 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: linux-lts-xenial
Title: package linux-image-4.4.0-64-generic 4.4.0-64.85~14.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)