package friendly-recovery 0.2.38ubuntu1 failed to install/upgrade: installed friendly-recovery package post-installation script subprocess returned error exit status 1 al8:/drupal8

[Stephan Grabski]

Processing triggers for systemd (237-3ubuntu10.22) ...
Processing triggers for initramfs-tools (0.130ubuntu3.8) ...
Processing triggers for ureadahead (0.100.0-21) ...
Processing triggers for libgdk-pixbuf2.0-0:amd64 (2.36.11-2) ...
Processing triggers for dbus (1.12.2-1ubuntu1.1) ...
Processing triggers for libapache2-mod-php7.2 (7.2.19-0ubuntu0.18.04.1) ...
Processing triggers for linux-image-4.15.0-51-generic (4.15.0-51.55) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-4.15.0-51-generic
Processing triggers for linux-image-4.18.0-21-generic (4.18.0-21.22~18.04.1) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-4.18.0-21-generic
Processing triggers for sgml-base (1.29) ...
Processing triggers for resolvconf (1.79ubuntu10.18.04.3) ...
Errors were encountered while processing:
 friendly-recovery
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)

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  https://bugs.launchpad.net/ubuntu/+source/grub2/+filebug/80311740-9008-11e9-aba5-d485646cd9a4?field.title=package+friendly-recovery+0.2.38ubuntu1+failed+to+install%2Fupgrade%3A+installed+friendly-recovery+package+post-installation+script+subprocess+returned+error+exit+status+1
al8:/drupal8# ufw allow from 84.100.29.72 to any port 22,80,443 proto tcp comment 'gallimedia aux'
Rule added
root@ev-drupal8:/drupal8# ufw status
Status: active

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: friendly-recovery 0.2.38ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
Uname: Linux 4.4.0-134-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
Date: Sun Jun 16 07:26:00 2019
ErrorMessage: installed friendly-recovery package post-installation script subprocess returned error exit status 1
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.8, python3-minimal, 3.6.7-1~18.04
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.1
 apt 1.6.11
SourcePackage: grub2
Title: package friendly-recovery 0.2.38ubuntu1 failed to install/upgrade: installed friendly-recovery package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2019-06-16 (0 days ago)

[Launchpad Janitor (janitor)]

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

[tonyk (s-launchpad-anroet-com)]

This bug was encountered while testing an upgrade from Ubuntu 16.04.7 LTS to 18.04 LTS using the following command:

lxc exec testupgrade -- script /dev/null -c do-release-upgrade -f DistUpgradeViewNonInteractive

I'm trying to do a silent install as I have many (>50) LXD containers that I need to upgrade. I'd like to not have to actively interact with the upgrade process. This was a test to see how smoothly it would go - not so well.

Also, despite the suggested flag <DistUpgradeViewNonInteractive> to avoid an interactive session, I was still prompted to answer a few questions.