upgrade failed

[h]

henning@henning-kontor-ubuntu:~$ sudo apt update
[sudo] password for henning:
Hit:1 http://no.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://linux.teamviewer.com/deb stable InRelease
Hit:4 http://no.archive.ubuntu.com/ubuntu bionic-updates InRelease
Get:5 http://repository.spotify.com stable InRelease [3 316 B]
Hit:6 http://no.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:7 https://repo.steampowered.com/steam stable InRelease
Get:8 http://dl.winehq.org/wine-builds/ubuntu bionic InRelease [6 259 B]
Hit:9 https://repo.skype.com/deb stable InRelease
Ign:10 http://webmin.mirror.somersettechsolutions.co.uk/repository sarge InRelease
Hit:11 http://packages.microsoft.com/repos/vscode stable InRelease
Hit:12 http://archive.ubuntu.com/ubuntu bionic InRelease
Hit:13 http://ppa.launchpad.net/agornostal/ulauncher/ubuntu bionic InRelease
Hit:14 http://webmin.mirror.somersettechsolutions.co.uk/repository sarge Release
Hit:15 https://repo.nordvpn.com/deb/nordvpn/debian stable InRelease
Hit:16 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:17 https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Hit:18 http://ppa.launchpad.net/daniel-marynicz/filemanager-actions/ubuntu bionic InRelease
Hit:19 https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit:20 http://ppa.launchpad.net/gezakovacs/ppa/ubuntu bionic InRelease
Hit:21 http://ppa.launchpad.net/jonathonf/ffmpeg-4/ubuntu bionic InRelease
Err:22 http://ppa.launchpad.net/kxstudio-team/hydrogen/ubuntu bionic InRelease
  403 Forbidden [IP: 91.189.95.83 80]
Hit:23 http://ppa.launchpad.net/linuxgndu/sqlitebrowser/ubuntu bionic InRelease
Hit:24 http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic InRelease
Hit:25 http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu bionic InRelease
Hit:26 http://ppa.launchpad.net/openjdk-r/ppa/ubuntu bionic InRelease
Hit:27 http://ppa.launchpad.net/pinta-maintainers/pinta-stable/ubuntu bionic InRelease
Ign:28 http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic InRelease
Err:29 http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic Release
  404 Not Found [IP: 91.189.95.83 80]
Err:5 http://repository.spotify.com stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D1742AD60D811D58
Err:8 http://dl.winehq.org/wine-builds/ubuntu bionic InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F
Ign:30 http://download.webmin.com/download/repository sarge InRelease
Hit:31 http://download.webmin.com/download/repository sarge Release
Reading package lists... Done
E: Failed to fetch http://ppa.launchpad.net/kxstudio-team/hydrogen/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 91.189.95.83 80]
E: The repository 'http://ppa.launchpad.net/kxstudio-team/hydrogen/ubuntu bionic InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D1742AD60D811D58
E: The repository 'http://repository.spotify.com stable InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.winehq.org/wine-builds/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F
henning@henning-kontor-ubuntu:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
henning@henning-kontor-ubuntu:~$ sudo apt dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
henning@henning-kontor-ubuntu:~$ sudo do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1 554 B]
Get:2 Upgrade tool [1 342 kB]
Fetched 1 344 kB in 0s (0 B/s)
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg'
extracting 'focal.tar.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://linux.teamviewer.com/deb stable InRelease
Hit http://dl.google.com/linux/chrome/deb stable InRelease
Get:1 http://dl.winehq.org/wine-builds/ubuntu bionic InRelease [6 259 B]
Hit http://no.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://repository.spotify.com stable InRelease [3 316 B]
Hit https://repo.steampowered.com/steam stable InRelease
Hit http://no.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit http://no.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit https://repo.skype.com/deb stable InRelease
Hit http://ppa.launchpad.net/agornostal/ulauncher/ubuntu bionic InRelease
Hit http://packages.microsoft.com/repos/vscode stable InRelease
Ign http://webmin.mirror.somersettechsolutions.co.uk/repository sarge InRelease
Hit https://repo.nordvpn.com/deb/nordvpn/debian stable InRelease
Hit http://ppa.launchpad.net/daniel-marynicz/filemanager-actions/ubuntu bionic InRelease
Hit http://webmin.mirror.somersettechsolutions.co.uk/repository sarge Release
Hit http://archive.ubuntu.com/ubuntu bionic InRelease
Hit https://packages.microsoft.com/ubuntu/18.04/prod bionic InRelease
Hit https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit http://ppa.launchpad.net/gezakovacs/ppa/ubuntu bionic InRelease
Hit http://ppa.launchpad.net/jonathonf/ffmpeg-4/ubuntu bionic InRelease
Hit http://security.ubuntu.com/ubuntu bionic-security InRelease
Err http://ppa.launchpad.net/kxstudio-team/hydrogen/ubuntu bionic InRelease
  403 Forbidden [IP: 91.189.95.83 80]
Hit http://ppa.launchpad.net/linuxgndu/sqlitebrowser/ubuntu bionic InRelease
Ign http://download.webmin.com/download/repository sarge InRelease
Hit http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic InRelease
Hit http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu bionic InRelease
Err http://dl.winehq.org/wine-builds/ubuntu bionic InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F
Hit http://ppa.launchpad.net/openjdk-r/ppa/ubuntu bionic InRelease
Hit http://ppa.launchpad.net/pinta-maintainers/pinta-stable/ubuntu bionic InRelease
Hit http://download.webmin.com/download/repository sarge Release
Ign http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic InRelease
Err http://ppa.launchpad.net/wine/wine-builds/ubuntu bionic Release
  404 Not Found [IP: 91.189.95.83 80]
Err http://repository.spotify.com stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D1742AD60D811D58
Fetched 3 316 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done

Checking for installed snaps

Calculating snap size requirements

Updating repository information

Third party sources disabled

Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.

To continue please press [ENTER]

Hit http://no.archive.ubuntu.com/ubuntu focal InRelease
Hit http://no.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit http://no.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit http://security.ubuntu.com/ubuntu focal-security InRelease
Hit http://archive.ubuntu.com/ubuntu focal InRelease
Fetched 0 B in 0s (0 B/s)

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done

Calculating the changes

Calculating the changes

Could not determine the upgrade

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'.

Restoring original system state

Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
henning@henning-kontor-ubuntu:~$ ubuntu-bug ubuntu-release-upgrader-core
comm: /var/log/dmesg: No such file or directory
henning@henning-kontor-ubuntu:~$ Opening in existing browser session.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18
Uname: Linux 4.15.0-118-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME-Flashback:GNOME
Date: Mon Oct 12 07:07:19 2020
InstallationDate: Installed on 2018-12-15 (666 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-12 (0 days ago)