package initramfs-tools 0.130ubuntu3.5 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1

[Laryx Decidua]

This happened when I tried to upgrade from 16.04.4 LTS to 18.04.1 LTS using the `do-release-upgrade` command on a Rock64 board (arm64 architecture, see https://www.pine64.org/?page_id=7147). I rebooted afterwards and the board claims that it was upgraded to 18.04.1 LTS. Appears to function normally.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: initramfs-tools 0.130ubuntu3.5
Uname: Linux 4.4.132-1075-rockchip-ayufan-ga83beded8524 aarch64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: arm64
Date: Sat Dec 8 14:12:29 2018
ErrorMessage: installed initramfs-tools package post-installation script subprocess returned error exit status 1
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: initramfs-tools
Title: package initramfs-tools 0.130ubuntu3.5 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2018-12-08 (0 days ago)