cupsaddsmb got discontinued upstream. It is not part of the CUPS package any more.
This happened in Dec 2018 already. Closing ... ** Changed in: cups (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1878322 Title: cupsaddsmb Status in cups package in Ubuntu: Invalid Bug description: this app is not into this package ! ubuntu server 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1878322/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp