backfill_from issue with oandastore

[Farout Al]

Im trying to do a backfill from static data using "backfill_from" using oandastore as per code below:

dataBackfill = bt.feeds.PandasData(dataname=dataframe)            

data = oandastore.getdata(dataname=args.pair, backfill_from=dataBackfill,timeframe=bt.TimeFrame.Minutes, compression=1)

I get the following error when running:

  File "C:\ProgramData\Anaconda3\lib\site-packages\backtrader\feed.py", line 196, in _start_finish
    self._calendar = self._env._tradingcal

  File "C:\ProgramData\Anaconda3\lib\site-packages\backtrader\lineseries.py", line 461, in __getattr__
    return getattr(self.lines, name)

AttributeError: 'Lines_LineSeries_DataSeries_OHLC_OHLCDateTime_Abst' object has no attribute '_env'

Anyone have any idea what its complaining about?
"AttributeError: 'Lines_LineSeries_DataSeries_OHLC_OHLCDateTime_Abst' object has no attribute '_env'"

[backtrader]

Let's assume you are using this: https://github.com/ftomassetti/backtrader-oandav20

You'd be better off posting in the project.

[Farout Al]

Thanks for the reply.
Im using Oanda v1 as per backtrader docs. Everything works in terms live data feed or adding static data from file or pandas but the backfill_from is giving me trouble.
In any case ill try to migrate to v20 and see if i get the same troubles.