during update to 18.04 the system said that i should send this message

[michael.rueck]

I got the following message:
»ubuntu-mate-core« kann nicht installiert werden
Es war nicht möglich, ein erforderliches Paket zu installieren. Bitte melden Sie diesen Fehler, indem Sie im Terminal den Befehl »ubuntu-bug ubuntu-release-upgrader-core« eingeben.
I copied the order in the terminal
and now I wrote theese lines
regards
Michael Rück

Description: Ubuntu 16.04.6 LTS
Release: 16.04

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Uname: Linux 4.10.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: MATE
Date: Tue Mar 31 22:45:09 2020
InstallationDate: Installed on 2017-12-18 (834 days ago)
InstallationMedia: Ubuntu-MATE 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2020-04-01 (0 days ago)
VarLogDistupgradeTermlog: