package friendly-recovery 0.2.38ubuntu1 failed to install/upgrade: installed friendly-recovery package post-installation script subprocess returned error exit status 127

[Benoit65]

The system directed me here after an automatic update. I have no idea what the bug is.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: friendly-recovery 0.2.38ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
Date: Tue Dec 18 18:13:13 2018
DuplicateSignature:
 package:friendly-recovery:0.2.38ubuntu1
 Setting up grub-pc (2.02-2ubuntu8.9) ...
 /var/lib/dpkg/info/grub-pc.config: 11: /etc/default/grub: GRUB_CMDLINE_LINUX: not found
 dpkg: error processing package grub-pc (--configure):
  installed grub-pc package post-installation script subprocess returned error exit status 127
ErrorMessage: installed friendly-recovery package post-installation script subprocess returned error exit status 127
InstallationDate: Installed on 2013-06-07 (2020 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.1
 apt 1.6.6
SourcePackage: friendly-recovery
Title: package friendly-recovery 0.2.38ubuntu1 failed to install/upgrade: installed friendly-recovery package post-installation script subprocess returned error exit status 127
UpgradeStatus: Upgraded to bionic on 2018-08-15 (126 days ago)

[Juhani Numminen (jsonic)]

The error message complains about the configuration file /etc/default/grub. Please attach it to the report.

[Benoit65 (seiuh3ac)]

Configuration file mentioned in the error message...

[Launchpad Janitor (janitor)]

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