[Bug 2147517] [NEW] release upgrader crashed: TypeError: Argument 0 does not allow None as a value
Benjamin Drung
2147517 at bugs.launchpad.net
Wed Apr 8 08:49:23 UTC 2026
Public bug reported:
I upgraded from questing to resolute, but the release upgrader crashed.
I tried to start it again, but it crashed again. I collected this stack
trace:
```
localuser:root being added to access control list
ERROR:root:not handled exception:
Traceback (most recent call last):
File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in <module>
controller.doPartialUpgrade()
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1940, in doPartialUpgrade
if not self.askDistUpgrade():
~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1234, in askDistUpgrade
res = self._view.confirmChanges(_("Do you want to start the upgrade?"),
changes,
self.cache.required_download)
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeViewGtk3.py", line 714, in confirmChanges
pkg.name, GLib.markup_escape_text(getattr(pkg.candidate, "summary", None)))])
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gi/overrides/GLib.py", line 417, in markup_escape_text
return GLib.markup_escape_text(text, length)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
TypeError: Argument 0 does not allow None as a value
Traceback (most recent call last):
File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in <module>
controller.doPartialUpgrade()
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1940, in doPartialUpgrade
if not self.askDistUpgrade():
~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1234, in askDistUpgrade
res = self._view.confirmChanges(_("Do you want to start the upgrade?"),
changes,
self.cache.required_download)
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeViewGtk3.py", line 714, in confirmChanges
pkg.name, GLib.markup_escape_text(getattr(pkg.candidate, "summary", None)))])
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gi/overrides/GLib.py", line 417, in markup_escape_text
return GLib.markup_escape_text(text, length)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
TypeError: Argument 0 does not allow None as a value
```
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ubuntu-release-upgrader-gtk 1:26.04.13
ProcVersionSignature: Ubuntu 7.0.0-10.10-generic 7.0.0-rc4
Uname: Linux 7.0.0-10-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.33.1-0ubuntu7
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 8 10:45:45 2026
InstallationDate: Installed on 2022-03-20 (1480 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
PackageArchitecture: all
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade resolute wayland-session
--
You received this bug notification because you are a member of Ubuntu
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Ubuntu.
https://bugs.launchpad.net/bugs/2147517
Title:
release upgrader crashed: TypeError: Argument 0 does not allow None as
a value
Status in ubuntu-release-upgrader package in Ubuntu:
New
Bug description:
I upgraded from questing to resolute, but the release upgrader
crashed. I tried to start it again, but it crashed again. I collected
this stack trace:
```
localuser:root being added to access control list
ERROR:root:not handled exception:
Traceback (most recent call last):
File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in <module>
controller.doPartialUpgrade()
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1940, in doPartialUpgrade
if not self.askDistUpgrade():
~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1234, in askDistUpgrade
res = self._view.confirmChanges(_("Do you want to start the upgrade?"),
changes,
self.cache.required_download)
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeViewGtk3.py", line 714, in confirmChanges
pkg.name, GLib.markup_escape_text(getattr(pkg.candidate, "summary", None)))])
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gi/overrides/GLib.py", line 417, in markup_escape_text
return GLib.markup_escape_text(text, length)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
TypeError: Argument 0 does not allow None as a value
Traceback (most recent call last):
File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 114, in <module>
controller.doPartialUpgrade()
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1940, in doPartialUpgrade
if not self.askDistUpgrade():
~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1234, in askDistUpgrade
res = self._view.confirmChanges(_("Do you want to start the upgrade?"),
changes,
self.cache.required_download)
File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeViewGtk3.py", line 714, in confirmChanges
pkg.name, GLib.markup_escape_text(getattr(pkg.candidate, "summary", None)))])
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gi/overrides/GLib.py", line 417, in markup_escape_text
return GLib.markup_escape_text(text, length)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
TypeError: Argument 0 does not allow None as a value
```
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ubuntu-release-upgrader-gtk 1:26.04.13
ProcVersionSignature: Ubuntu 7.0.0-10.10-generic 7.0.0-rc4
Uname: Linux 7.0.0-10-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.33.1-0ubuntu7
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 8 10:45:45 2026
InstallationDate: Installed on 2022-03-20 (1480 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
PackageArchitecture: all
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeTermlog:
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