Failure in upgrade to next version Ubuntu 20.xy

[Billaud]

Hello everybody from the Ubuntu developers team,

I got some problems during my upgrade to the Ubuntu new version 20.04, if I remember well the Ubuntu next version number.
I've installed others software like mysql, wildfly, postgresql, and others development tools whose repositories have urls in ppa form.
I will have to apply ppa-purge command to all of these packages but I will have to look for the documentation first since I don't master well how to apply this command.

Many thanks for your help.
Cordially
Bye
Marc Billaud
Email:<email address hidden>

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18
Uname: Linux 4.15.0-122-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 27 15:36:03 2020
InstallationDate: Installed on 2016-09-23 (1494 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-27 (0 days ago)
VarLogDistupgradeTermlog: