Upgrade ubuntu broken package

[Ravnit]

First of all, thank you for the quick response. I am surprised to see the amount of help that flows in this quickly.

This is a repost after [Bug 1838011] Re: Issue with upgrading from 18.04 to Disco 19.04.

ppa purge oibaf <--------- this didnt work for me, said oibaf doesn't exist

Is there a better way to fix all broken packages?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.34
ProcVersionSignature: Ubuntu 4.15.0-55.60-generic 4.15.18
Uname: Linux 4.15.0-55-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 31 12:45:10 2019
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
InstallationDate: Installed on 2019-03-05 (147 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2019-07-31 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2019-03-31T11:06:34.112551