Failed dependencies during do-release-upgrade 16.04 to 18.04

[Support]

Upgrading from 16.04 to 18.04 using do-release-upgrade, there are no packages needing to be upgraded: sudo apt list --upgradable, there appear to be no packages broken sudo dpkg --configure -a but the upgrade fails with many dependency errors.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.32
ProcVersionSignature: Ubuntu 4.4.0-208.240-generic 4.4.262
Uname: Linux 4.4.0-208-generic x86_64
NonfreeKernelModules: hcpdriver talpa_vfshook talpa_pedconnector talpa_pedevice talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
ApportVersion: 2.20.1-0ubuntu2.30
Architecture: amd64
CrashDB: ubuntu
Date: Wed Apr 14 23:00:04 2021
InstallationDate: Installed on 2017-04-26 (1450 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2021-04-15 (0 days ago)