package python3-aptdaemon.pkcompat 1.1.1+bzr982-0ubuntu14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Encountered this bug when I was upgrading my Dell Latitude D630 from 14.04.4 (64-bit) to 16.04.1 (also 64-bit).

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python3-aptdaemon.pkcompat 1.1.1+bzr982-0ubuntu14
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Mon Aug 1 22:54:26 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-01-24 (555 days ago)
InstallationMedia:

PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: aptdaemon
Title: package python3-aptdaemon.pkcompat 1.1.1+bzr982-0ubuntu14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2016-08-02 (0 days ago)