I'm attaching a screenshot of how it was supposed to be. There is a small bug in software-properties-gtk that is preventing the error to appear. I've already proposed a fix for this. Thanks for the report.
** Attachment added: "Screenshot from 2019-02-25 13-01-15.png" https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1817352/+attachment/5241551/+files/Screenshot%20from%202019-02-25%2013-01-15.png -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. https://bugs.launchpad.net/bugs/1817352 Title: Livepatch is not available for this system Ubuntu Disco 19.04 Status in software-properties package in Ubuntu: In Progress Bug description: Hi guys There is an option for livepacth, but there is information that is not yet available for Ubuntu Disk 19.04. Will the livepatch be available for Ubuntu Disk 19.04? "Livepacth is not available for this system" See attached Thank you ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: software-properties-gtk 0.97.6 ProcVersionSignature: Ubuntu 4.19.0-13.14-generic 4.19.20 Uname: Linux 4.19.0-13-generic x86_64 ApportVersion: 2.20.10-0ubuntu21 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Feb 22 14:08:04 2019 ExecutablePath: /usr/bin/software-properties-gtk InstallationDate: Installed on 2019-02-11 (10 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190203) InterpreterPath: /usr/bin/python3.7 PackageArchitecture: all Python3Details: /usr/bin/python3.7, Python 3.7.2+, python3-minimal, 3.7.2-1 PythonDetails: /usr/bin/python2.7, Python 2.7.16rc1, python-minimal, 2.7.15-4 SourcePackage: software-properties UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1817352/+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