package grub-efi-amd64 2.02~beta2-9ubuntu1.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Joseph]

package grub-efi-amd64 2.02~beta2-9ubuntu1.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-efi-amd64 2.02~beta2-9ubuntu1.5
ProcVersionSignature: Ubuntu 3.13.0-68.111-generic 3.13.11-ckt27
Uname: Linux 3.13.0-68-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Fri Dec 11 19:04:29 2015
DuplicateSignature: package:grub-efi-amd64:2.02~beta2-9ubuntu1.5:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-10-27 (48 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
InvalidGrubScript: /etc/default/grub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-68-generic.efi.signed root=UUID=a7297778-c076-4ce0-bcdd-9df66eb0cad1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: grub2
Title: package grub-efi-amd64 2.02~beta2-9ubuntu1.5 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)