Assigning to debian-installer for now -- this might be an issue where ca-certificates is missing (since it needs to be there before you go get it from an https mirror, hopefully).
That said, is this issue reproducible using the standard iso image; the one available on http://cdimage.ubuntu.com/releases/bionic/release/ubuntu-18.04-server- amd64.iso ? ** Package changed: ubuntu => debian-installer (Ubuntu) ** Changed in: debian-installer (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777474 Title: Netinstall ISO offers usage of HTTPS mirrors but lacks ca-certificates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1777474/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs