[Bug 1909865] [NEW] error in upgrade

Public bug reported: error in upgrade ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.42 ProcVersionSignature: Ubuntu 4.15.0-129.132-generic 4.15.18 Uname: Linux 4.15.0-129-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia

[Bug 1190391] [NEW] ubuntu system-update ... File not found

Public bug reported: W:Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/natty-backports/main/binary-i386/Packages 404 Not Found [IP: 141.30.13.30 80] , W:Failed to fetch http://de.archive.ubuntu.com/ubuntu/dists/natty-backports/restricted/binary-i386/Packages 404 Not Found [IP: