Unable to upgrade to Ubuntu 20.04 from 18.04

[Apoorva M K]

It asks me to either do a ppa purge or check for other errors in the logs. I found that there are broken packages from the log but I am unsure how to fix those, I have tried installing using apt.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.42
ProcVersionSignature: Ubuntu 4.15.0-136.140-generic 4.15.18
Uname: Linux 4.15.0-136-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Thu Feb 25 22:20:11 2021
InstallationDate: Installed on 2018-08-24 (916 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2021-02-25 (0 days ago)
VarLogDistupgradeTermlog:

[Jouni Mettala (jouni-mettala)]

Could you uninstall following packages and try again?

python2-dev
python-all-dev
libpython2-dev
libpython2.7-dev

[Brian Murray (brian-murray)]

Thanks for taking the time to report this upgrade failure. There is currently a new version of the release upgrader availalbe in -proposed which may resolve the error you've encountered. Please run the following command to test the new version of the upgrader:

  do-release-upgrade -p

Please lets us know the results in this bug report. Thanks again and good luck!