Thanks for adding the error message. I'm afraid don't know what goes wrong, all I could find when searching for the error message was an ancient bug report (bug 1191700) which I don't know if is relevant or not. Setting status back to New, hopefully someone else can take a look at this and see what's going on.
** Changed in: software-properties (Ubuntu) Status: Incomplete => New -- 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/1961477 Title: software-properties-gtk not running Status in software-properties package in Ubuntu: New Bug description: When I try to run the program from Ubuntu nothing happens. An error occurs when trying to run the program from the console. Attempts to roll back the version were unsuccessful. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: software-properties-gtk 0.99.9.8 ProcVersionSignature: Ubuntu 5.13.0-30.33~20.04.1-generic 5.13.19 Uname: Linux 5.13.0-30-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Feb 19 15:33:18 2022 InstallationDate: Installed on 2022-01-10 (39 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) PackageArchitecture: all ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=ru_RU.UTF-8 SHELL=/bin/bash 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/1961477/+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