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

[agdsn-sentry[bot]]

Sentry Issue: SIPA-3R

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 346, in loads
    return _default_decoder.decode(s)
  File "json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None

JSONDecodeError: Expecting value: line 1 column 1 (char 0)
(14 additional frame(s) were not displayed)
...
  File "sipa/model/pycroft/user.py", line 50, in from_ip
    status, user_data = api.get_user_from_ip(ip)
  File "sipa/model/pycroft/api.py", line 55, in get_user_from_ip
    return self.get('user/from-ip', params={'ip': ip}, no_raise=True)
  File "sipa/model/pycroft/api.py", line 211, in get
    return self._do_api_call(request_function, url)
  File "sipa/model/pycroft/api.py", line 246, in _do_api_call
    return response.status_code, response.json()
  File "requests/models.py", line 975, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)