I removed the ubuntu-desktop metapackage, as suggested in bug report 1888275. That allowed the do-release-upgrade scripting to proceed. Thanks for pointing out the other report, and apologies for the duplication.
I removed the ubuntu-desktop metapackage, as suggested in bug report 1888275. That allowed the do-release-upgrade scripting to proceed. Thanks for pointing out the other report, and apologies for the duplication.