It'd probably be worth updating the following file to reflect the fact that lubuntu-core went away.
https://bazaar.launchpad.net/~ubuntu-core-dev/ubuntu-release-upgrader/trunk/view/head:/data/DistUpgrade.cfg
It'd probably be worth updating the following file to reflect the fact that lubuntu-core went away.
https:/ /bazaar. launchpad. net/~ubuntu- core-dev/ ubuntu- release- upgrader/ trunk/view/ head:/data/ DistUpgrade. cfg