[Bug 1895575] [NEW] Cannot upgrade to Ubuntu 20.04 despite purging unofficial Launchapd PPAs

Public bug reported: I tried to upgrade from Ubuntu 18.04 to 20.04 but got the error: 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

[Bug 1895574] [NEW] Cannot upgrade to Ubuntu 20.04 despite purging unofficial Launchapd PPAs

Public bug reported: I tried to upgrade from Ubuntu 18.04 to 20.04 but got the error: 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