[Bug 1931031] [NEW] when i upgrade from version 18.04 to 20.04, an unsolvable problem occurred while calculating the progress, and the upgrade crashes

[Riccardo]

Public bug reported:

when i upgrade from version 18.04 to 20.04, an unsolvable problem
occurred while calculating the progress, and the upgrade crashes

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.44
ProcVersionSignature: Ubuntu 4.15.0-144.148-generic 4.15.18
Uname: Linux 4.15.0-144-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.24
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sun Jun  6 18:57:22 2021
InstallationDate: Installed on 2018-01-29 (1223 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2021-06-06 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages

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https://bugs.launchpad.net/bugs/1931031

Title:
  when i upgrade from version 18.04 to 20.04, an unsolvable problem
  occurred while calculating the progress, and the upgrade crashes

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  when i upgrade from version 18.04 to 20.04, an unsolvable problem
  occurred while calculating the progress, and the upgrade crashes

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.44
  ProcVersionSignature: Ubuntu 4.15.0-144.148-generic 4.15.18
  Uname: Linux 4.15.0-144-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.24
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jun  6 18:57:22 2021
  InstallationDate: Installed on 2018-01-29 (1223 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-06-06 (0 days ago)
  VarLogDistupgradeTermlog:

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