Upgrade to 23.10 will not complete

[Matt Thorn]

I am trying to upgrade from 23.04 to 23.10. I have recently upgraded from 22.04 to 23.04.

I get the following error:

An unresolvable problem occurred while calculating the upgrade.

 This was likely caused by:
 * Unofficial software packages not provided by Ubuntu
Please use the tool 'ppa-purge' from the ppa-purge
package to remove software from a Launchpad PPA and
try the upgrade again.

If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: ubuntu-release-upgrader-core 1:23.04.7
ProcVersionSignature: Ubuntu 6.2.0-39.40-generic 6.2.16
Uname: Linux 6.2.0-39-generic x86_64
ApportVersion: 2.26.1-0ubuntu2.1
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CrashReports:
 640:1000:124:1774649:2023-12-19 22:00:51.177911520 +0000:2023-12-19 22:00:52.177911520 +0000:/var/crash/_usr_libexec_tracker-extract-3.1000.crash
 640:1000:124:2783708:2023-12-19 22:14:26.340171337 +0000:2023-12-19 22:14:27.340171337 +0000:/var/crash/_usr_bin_gnome-control-center.1000.crash
CurrentDesktop: ubuntu:GNOME
Date: Tue Dec 19 23:01:39 2023
InstallationDate: Installed on 2023-12-19 (0 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to lunar on 2023-12-19 (0 days ago)
VarLogDistupgradeTermlog: