Upgrade from 18.04 failed

[Todd]

Was upgrading 18.04 to 20 and it won't upgrade

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.40
ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
Uname: Linux 4.15.0-122-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 20 14:40:32 2020
InstallationDate: Installed on 2018-12-09 (681 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-20 (0 days ago)
VarLogDistupgradeTermlog:

[Peter Mao (peterxmao)]

Problem appears when the Xfce Power Manager locks the session (under the security tab). When the screensaver locks the screen, I am still able to log back in.