ubuntu-release-upgrader crashed with configparser.NoOptionError: No option 'devrelease' in section: 'Options'

Here's the relevant part of the Traceback:

Traceback (most recent call last):
  File "/usr/lib/python3.6/configparser.py", line 789, in get
    value = d[option]
  File "/usr/lib/python3.6/collections/__init__.py", line 883, in __getitem__
    return self.__missing__(key) # support subclasses that define __missing__
  File "/usr/lib/python3.6/collections/__init__.py", line 875, in __missing__
    raise KeyError(key)
KeyError: 'devrelease'

During handling of the above exception, another exception occurred:

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 2097, in doPartialUpgrade
    if not self.askDistUpgrade():
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1154, in askDistUpgrade
    changes = self.calcDistUpgrade()
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1117, in calcDistUpgrade
    if not self.cache.distUpgrade(self._view, self.serverMode, self._partialUpgrade):
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 241, in wrapper
    res = f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 681, in distUpgrade
    self.config.get("Options", "devRelease") == "True":
  File "/usr/lib/python3.6/configparser.py", line 792, in get
    raise NoOptionError(option, section)
configparser.NoOptionError: No option 'devrelease' in section: 'Options'

It looks like if options are not set at all when running do-release upgrade then there is no default value for devRelease. From DistUpgrade/DistUpgradeController.py:

       if self.options:
            if self.options.devel_release:
                self.config.set("Options","devRelease", "True")
            else:
                self.config.set("Options","devRelease", "False")

This bug was fixed in the package ubuntu-release-upgrader - 1:19.10.5

---------------
ubuntu-release-upgrader (1:19.10.5) eoan; urgency=medium

  * DistUpgrade/DistUpgradeViewNonInteractive.py: when responding to a
    conffile prompt with "n" use bytes not a string. (LP: #1796193)
  * DistUpgrade/DistUpgradeController.py: set a default value for devRelease
    even if there are no options specified. (LP: #1827441)

 -- Brian Murray <email address hidden> Fri, 10 May 2019 13:30:07 -0700

Hi, I am on Ubuntu 19.04 and I have this bug preventing me to upgrade. What should I do?

Version: 1:19.04.16.9