That's most certainly a user error, not a software bug. Please seek support:
https://ubuntu.com/pro https://ubuntu.com/community/support -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2106048 Title: E: Typ »sudo« in Zeile 3 der Quellliste /etc/apt/sources.list.d/signal-xenial.list ist unbekannt. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/2106048/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
