What corrected for me was Seth's post in https://bugs.launchpad.net /deja-dup/+bug/1606449 of:
sudo apt install duplicity sudo apt install python-gi Immediately works, though it appeared my system only needed to install duplicity and python-pi was already at the newest version and did not install. The issue appeared on my laptop; I don't recall an issue with any desktops here. (Don't know if that piece of trivia helps track down the problem source.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1641423 Title: Back up failed with message: Failed to execute child process "duplicity" (No such file or directory) To manage notifications about this bug go to: https://bugs.launchpad.net/deja-dup/+bug/1641423/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs