package linux-image-4.15.0-96-generic 4.15.0-96.97~16.04.1 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1

[Håkan Elmqvist]

Synaptic reports this error every time

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-96-generic 4.15.0-96.97~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-91.92~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-91-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
Date: Thu Apr 16 13:23:16 2020
ErrorMessage: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
InstallationDate: Installed on 2020-02-06 (69 days ago)
InstallationMedia: Ubuntu 16.04.5 LTS "Xenial Xerus" - Release amd64 (20180731)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.29ubuntu0.1
SourcePackage: initramfs-tools
Title: package linux-image-4.15.0-96-generic 4.15.0-96.97~16.04.1 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
UpgradeStatus: No upgrade log present (probably fresh install)