Not able to upgrade ubuntu from 21.04 to latest

[Sweedal Masih]

Displaying the below errors:

Could not calculate 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'.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: ubuntu-release-upgrader-core 1:21.04.17
ProcVersionSignature: Ubuntu 5.11.0-49.55-generic 5.11.22
Uname: Linux 5.11.0-49-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.4
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 10 04:19:41 2022
InstallationDate: Installed on 2021-10-11 (363 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to hirsute on 2022-10-10 (0 days ago)
VarLogDistupgradeTermlog:

[William Wilson (jawn-smith)]

@sweedalvm, the issue is with upgrading with PPAs enabled. Can you try running `ppa-purge` and trying your upgrade again?