Comment 5 for bug 2039411

I am seeing this on focal, when running command:

$ add-apt-repository ppa:snappy-dev/image -y

on 20.04. 22.04 seems to be fine.

The errors I see are of the same two types as those in the bug description:

<<
Cannot add PPA: 'ppa:~snappy-dev/ubuntu/image'.
The team named '~snappy-dev' has no PPA named 'ubuntu/image'
Please choose from the following available PPAs:
 * '15.04': DEPRECATED - WILL REMOVE SOON (Tools for Snappy 15.04)
 * 'beta': Snappy beta
 * 'edge': Snappy Edge
 * 'image': Packages used in constructing the Ubuntu Core component of Snappy
...
>>

or the backtrace:

<<
Traceback (most recent call last):
  File "/usr/bin/add-apt-repository", line 137, in <module>
    shortcut = shortcut_handler(line)
  File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 885, in shortcut_handler
    ret = factory(shortcut)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 469, in shortcut_handler
    return PPAShortcutHandler(shortcut)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 426, in __init__
    info = get_ppa_info(self.shortcut)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 392, in get_ppa_info
    _get_suggested_ppa_message(user, ppa))
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 349, in _get_suggested_ppa_message
    lp_user = get_info_from_lp(LAUNCHPAD_USER_API % user)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 104, in get_info_from_lp
    return get_info_from_https(lp_url, True)
  File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 98, in get_info_from_https
    return json.loads(data)
  File "/usr/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
>>