[Bug 1902138] Re: Update manager failed by python

[shameerariff]

*** This bug is a duplicate of bug 1415128 ***
    https://bugs.launchpad.net/bugs/1415128

** This bug has been marked a duplicate of bug 1415128
   Update-manager not launching

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https://bugs.launchpad.net/bugs/1902138

Title:
  Update manager failed by python

Status in python-apt package in Ubuntu:
  New

Bug description:
  Whenever the update-manager starts,the following error occurs if
  software-properties-gtk is opened that also lead to the error which
  was listed next to update-manager

  
  $ sudo update-manager 
  Checking for a new Ubuntu release
  authenticate 'groovy.tar.gz' against 'groovy.tar.gz.gpg' 
  extracting 'groovy.tar.gz'
  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 197, in _get_from_and_to_version
      di.version('%s' % self.controller.fromDist).split()[0]
  AttributeError: 'UbuntuDistroInfo' object has no attribute 'version'

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-9omt7t12/groovy", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 2089, in run
      return self.fullUpgrade()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 1926, in fullUpgrade
      if not self.doPostInitialUpdate():
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 924, in doPostInitialUpdate
      self.quirks.run("PostInitialUpdate")
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 99, in run
      func()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 118, in groovyPostInitialUpdate
      self._get_from_and_to_version()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 203, in _get_from_and_to_version
      (r.version for r in di.get_all("object")
  AttributeError: 'UbuntuDistroInfo' object has no attribute 'get_all'
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/problem_report.py", line 477, in add_to_existing
      self.write(f)
    File "/usr/lib/python3/dist-packages/problem_report.py", line 430, in write
      block = f.read(1048576)
    File "/usr/lib/python3.8/codecs.py", line 322, 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-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 197, in _get_from_and_to_version
      di.version('%s' % self.controller.fromDist).split()[0]
  AttributeError: 'UbuntuDistroInfo' object has no attribute 'version'

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-9omt7t12/groovy", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 2089, in run
      return self.fullUpgrade()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 1926, in fullUpgrade
      if not self.doPostInitialUpdate():
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeController.py", line 924, in doPostInitialUpdate
      self.quirks.run("PostInitialUpdate")
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 99, in run
      func()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 118, in groovyPostInitialUpdate
      self._get_from_and_to_version()
    File "/tmp/ubuntu-release-upgrader-9omt7t12/DistUpgrade/DistUpgradeQuirks.py", line 203, in _get_from_and_to_version
      (r.version for r in di.get_all("object")
  AttributeError: 'UbuntuDistroInfo' object has no attribute 'get_all'


  
  $ software-properties-gtk 
  ERROR:dbus.proxies:Introspect error on :1.198:/: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
  Traceback (most recent call last):
    File "/usr/bin/software-properties-gtk", line 100, in <module>
      app = SoftwarePropertiesGtk(datadir=options.data_dir, options=options, file=file)
    File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 211, in __init__
      self.backend.Reload();
    File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 72, in __call__
      return self._proxy_method(*args, **keywords)
    File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 141, in __call__
      return self._connection.call_blocking(self._named_service,
    File "/usr/lib/python3/dist-packages/dbus/connection.py", line 652, in call_blocking
      reply_message = self.send_message_with_reply_and_block(
  dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.198 was not provided by any .service files

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