Public bug reported: when using sudo apt-get update there are bug like that.
ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.26 [origin: unknown] ProcVersionSignature: Ubuntu 4.15.0-45.48~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-45-generic i686 ApportVersion: 2.20.1-0ubuntu2.20 Architecture: i386 CrashDB: ubuntu Date: Sun Nov 3 13:16:40 2019 InstallationDate: Installed on 2019-11-03 (0 days ago) InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release i386 (20190227.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2019-11-03 (0 days ago) VarLogDistupgradeAptlog: Log time: 2019-11-03 13:13:01.755524 Log time: 2019-11-03 13:13:22.507612 Log time: 2019-11-03 13:16:39.885791 Log time: 2019-11-03 13:16:40.511523 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug dist-upgrade i386 third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851094 Title: W: Failed to fetch http://kr.archive.ubuntu.com/ubuntu/dists/xenial- backports/InRelease Unable to connect to kr.archive.ubuntu.com:http: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1851094/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs