JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[ukanga]

Sentry Issue:

JSONDecodeError: Expecting value: line 1 column 1 (char 0)
  File "requests/models.py", line 971, in json
    return complexjson.loads(self.text, **kwargs)
  File "__init__.py", line 525, in loads
    return _default_decoder.decode(s)
  File "simplejson/decoder.py", line 372, in decode
    obj, end = self.raw_decode(s)
  File "simplejson/decoder.py", line 402, in raw_decode
    return self.scan_once(s, idx=_w(s, idx).end())

JSONDecodeError: Expecting value: line 1 column 1 (char 0)
(6 additional frame(s) were not displayed)
...
  File "oidc/viewsets.py", line 267, in callback
    id_token = client.retrieve_token_using_auth_code(
  File "oidc/client.py", line 132, in retrieve_token_using_auth_code
    f"Failed to retrieve ID Token: {response.json()}"

[ukanga]

This seems to be linked to a 504 timeout issue or similar response. Perhaps recommend that the user retry later.