I have a 16.04 system where the package snapd has been uninstalled. On trying to upgrade this system to 18.04, I get the following error
$ sudo update-manager -d
/usr/bin/update-manager:28: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk
/usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Dbusmenu was imported without specifying a version first. Use gi.require_version('Dbusmenu', '0.4') before import to ensure that the right version gets loaded.
from gi.repository import Dbusmenu, Unity
/usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Unity was imported without specifying a version first. Use gi.require_version('Unity', '7.0') before import to ensure that the right version gets loaded.
from gi.repository import Dbusmenu, Unity
Checking for a new Ubuntu release
/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcher.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk, Gdk
/usr/lib/python3/dist-packages/DistUpgrade/ReleaseNotesViewerWebkit.py:33: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
from gi.repository import WebKit2 as WebKit
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
if not self.doPostInitialUpdate():
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
self.quirks.run("PostInitialUpdate")
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
func()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
self._checkStoreConnectivity()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
stderr=PIPE, universal_newlines=True).communicate()
File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
restore_signals, start_new_session)
File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'snap'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
self.write(f)
File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
block = f.read(1048576)
File "/usr/lib/python3.5/codecs.py", line 321, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
Original exception was:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
if app.run():
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
return self.fullUpgrade()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
if not self.doPostInitialUpdate():
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
self.quirks.run("PostInitialUpdate")
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
func()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
self._checkStoreConnectivity()
File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
stderr=PIPE, universal_newlines=True).communicate()
File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
restore_signals, start_new_session)
File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'snap'
