I cant do a simple upgrade of Ubuntu from 20 to 22, I have deleted almost everyting, I hav cleaned my system

[Anastasiia Revunets]

Checking for a new Ubuntu release
Get:1 Upgrade tool signature [833 B]
Get:2 Upgrade tool [1.267 kB]
Fetched 1.268 kB in 0s (0 B/s)
authenticate 'jammy.tar.gz' against 'jammy.tar.gz.gpg'
extracting 'jammy.tar.gz'

Reading cache

Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://nl.archive.ubuntu.com/ubuntu focal InRelease
Hit http://nl.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit http://security.ubuntu.com/ubuntu focal-security InRelease
Hit http://nl.archive.ubuntu.com/ubuntu focal-backports InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
None

Checking for installed snaps

Calculating snap size requirements

Updating repository information
Hit http://nl.archive.ubuntu.com/ubuntu jammy InRelease
Hit http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit http://nl.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit http://nl.archive.ubuntu.com/ubuntu jammy-backports 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 calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

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

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.41
ProcVersionSignature: Ubuntu 5.15.0-139.149~20.04.1-generic 5.15.178
Uname: Linux 5.15.0-139-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.31
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 7 18:25:47 2026
InstallationDate: Installed on 2021-12-04 (1495 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2026-01-07 (0 days ago)