Public bug reported: Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade. This was caused by: * Upgrading to a pre-release version of Ubuntu This is most likely a transient problem, please try again later. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.44 ProcVersionSignature: Ubuntu 4.15.0-51.55-generic 4.15.18 Uname: Linux 4.15.0-51-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.24 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Wed Jul 14 12:24:46 2021 PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to bionic on 2021-07-14 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936174 Title: I have tried multiple times to upgrade from 18.04 to 20.04 but it fails everytime To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1936174/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs