usrmerge FATAL ERROR line 172

[neil bain]

I upgraded from 20.04. There was a warning "This upgrade willl continue but the usrmerge package may not be in a working state. Please consider submitting a bug report."
I later got this

 FATAL ERROR:
Both /lib/udev/mtp-probe and /usr/lib/udev/mtp-probe exist.

It appears to be at line 172

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-release-upgrader-core 1:22.04.13
ProcVersionSignature: Ubuntu 5.15.0-46.49-generic 5.15.39
Uname: Linux 5.15.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports:
 640:0:117:1102460:2022-08-22 14:49:54.693282943 +0100:2022-08-22 15:11:15.496275469 +0100:/var/crash/usrmerge.0.crash
 600:109:117:37:2022-08-22 13:44:36.830238516 +0100:2022-08-22 13:44:36.810236297 +0100:/var/crash/_usr_libexec_tracker-extract.1000.uploaded
 640:1000:117:3969871:2022-08-22 13:44:32.293724331 +0100:2022-08-22 13:44:32.393735923 +0100:/var/crash/_usr_libexec_tracker-extract.1000.crash
 644:1000:117:0:2022-08-22 13:44:32.313726649 +0100:2022-08-22 13:44:32.313726649 +0100:/var/crash/_usr_libexec_tracker-extract.1000.upload
CurrentDesktop: Unity:Unity7:ubuntu
Date: Mon Aug 22 16:58:05 2022
InstallationDate: Installed on 2018-04-16 (1589 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to jammy on 2022-08-22 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2021-03-31T11:35:33.195556