I'm following the sample code here: 
https://www.quantconnect.com/docs/v2/writing-algorithms/datasets/coinapi/binance-crypto-future-price-data

I set the date to something more recent. In the sample code the brokerage model is set twice. I tried with both.  

class CoinAPIDataAlgorithm(QCAlgorithm):

    def initialize(self) -> None:
        self.set_start_date(2020, 6, 1)
        self.set_end_date(2021, 6, 1)

        # Set Account Currency to Binance Stable Coin for USD
        self.set_account_currency("BUSD")
        self.set_cash(100000)

        self.set_brokerage_model(BrokerageName.BINANCE_FUTURES, AccountType.MARGIN)
        self.set_brokerage_model(BrokerageName.BINANCE_COIN_FUTURES, AccountType.MARGIN)
        
        crypto_future = self.add_crypto_future("BTCBUSD", Resolution.MINUTE)
        # perpetual futures does not have a filter function
        self.btcbusd = crypto_future.symbol

 

I then call historical data which is also from the sample. However I get no data. length == 0
What am I doing wrong?

# TradeBar objects
history_trade_bars = self.history[TradeBar](self.btcbusd, 100, Resolution.MINUTE)