Unable to upgrade, non-informative error

[Hans]

In attempting to upgrade, I get a notice that "An unresolvable problem occurred while calculating the upgrade." Followed by a blank space, followed by a notice that "if none of this applies..." saying check the logs. I am guessing something was supposed to be in that blank space.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.40
ProcVersionSignature: Ubuntu 4.15.0-124.127-generic 4.15.18
Uname: Linux 4.15.0-124-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.20
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity:Unity7:ubuntu
Date: Tue Nov 17 18:14:40 2020
InstallationDate: Installed on 2016-02-10 (1742 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-11-18 (0 days ago)
VarLogDistupgradeTermlog:

[Daniel Pranner (danielpranner)]

i have the same, i think its something with python-minimal

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1898152, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.