get_opportunity_forecasts() generator not working, ValueError

[djBirdman]

I'm trying to use the OpportunityForecastAPI, but trying to use the result from get_opportunity_forecasts() for the forecasts under an opportunity results in a "ValueError: dictionary update sequence element #0 has length 1; 2 is required" error.

In testing, the get count gives the expected number of forecasts. e.g. this works:

api_cw_forecast = opportunity_forecast_api.OpportunityForecastAPI(url=URL, auth=AUTH, parent=opp.id)
print(api_cw_forecast.get_opportunity_forecasts_count())

But

api_cw_forecast = opportunity_forecast_api.OpportunityForecastAPI(url=URL, auth=AUTH, parent=opp.id)
forecasts = api_cw_forecast.get_opportunity_forecasts()
for f in forecasts:
    print(f.id)

results in

Traceback (most recent call last):
  File "./opportunity.py", line 26, in <module>
    for f in forecasts:
  File "..../connectpyse/cw_controller.py", line 35, in _get
    yield self._class(json)
  File "..../connectpyse/sales/opportunity_forecast.py", line 31, in __init__
    super().__init__(json_dict)
  File "..../connectpyse/cw_model.py", line 5, in __init__
    self.__dict__.update(json_dict)
ValueError: dictionary update sequence element #0 has length 1; 2 is required

I've confirmed that get_opportunity_forecasts() returns a generator object, but not sure about things beyond that. Guessing it could be the structure of forecast / forecastItems under the opportunity being different?