package grub-efi-amd64-signed 1.66+2.02~beta2-36ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[TOXMEH]

ubuntu installation crashed on installing grab2

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66+2.02~beta2-36ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Fri Apr 22 17:56:48 2016
Df:
 Файл.система 1K-блоков Использовано Доступно Использовано% Cмонтировано в
 /dev/sda1 476580888 129279260 323069692 29% /
 /dev/sdb1 1975580 1483920 491660 76% /cdrom
 udev 1949120 0 1949120 0% /dev
 tmpfs 392756 6372 386384 2% /run
ErrorMessage: subprocess installed post-installation script returned error exit status 1
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66+2.02~beta2-36ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Alberto Salvia Novella (es20490446e)]

Does it prevent the installation to continue? Does it render the system broken?

When answered, please set this bug status back to "confirmed". Thank you.

[Alberto Salvia Novella (es20490446e)]

@ TOXMEH

Please answer my latest question before marking this bug as confirmed.

[Launchpad Janitor (janitor)]

[Expired for grub2-signed (Ubuntu) because there has been no activity for 60 days.]