Sudden error with timeseries_client.py

[craignwf]

A section of python used to retrieve data has suddenly started to fail last week:

readings = dict(
(loc['Identifier'],
timeseries.publish.get('/GetFieldVisitReadingsByLocation', params={
'LocationIdentifier': loc['Identifier'],
'Parameters': ['Discharge'],
'ApplyDatumConversion': 'true'
})['FieldVisitReadings']
) for loc in locationDescriptions)

and receiving the following error:

Traceback (most recent call last):
File "C:\Scripts\CreateStage.py", line 18, in
readings = dict(
File "C:\Scripts\CreateStage.py", line 20, in
timeseries.publish.get('/GetFieldVisitReadingsByLocation', params={
File "C:\Scripts\timeseries_client.py", line 203, in get
return self.json_or_none(self._get_raw(url, **kwargs))
File "C:\Scripts\timeseries_client.py", line 223, in get_raw
return response_or_raise(r)
File "C:\Scripts\timeseries_client.py", line 27, in response_or_raise
json = response.json()
File "C:\Users\isbcf\AppData\Roaming\Python\Python39\site-packages\requests\models.py", line 910, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Program Files\Python39\lib\json_init.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Program Files\Python39\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Program Files\Python39\lib\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)