Historical Universe Chains

Expected Behavior

We can get historical Future chains data in an algorithm.

Actual Behavior

self.futures_chain returns the current chain.

This algorithm

class USFutureDataAlgorithm(QCAlgorithm):

    def initialize(self) -> None:
        self.set_start_date(2020, 6, 1)
        self.set_end_date(2021, 6, 1)
        self._future = self.add_future(Futures.Metals.GOLD)
        self._future.set_filter(lambda universe: universe.standards_only().front_month())
        history = self.history[FuturesChain](self._future.symbol, self.time-timedelta(30), self.time)
        for c in history:
            pass

throws

During the algorithm initialization, the following exception has occurred: Data type 'FuturesChain' missing parameterless constructor. E.g. public FuturesChain() { }
at initialize
for c in history:
in main.py: line 10
Data type 'FuturesChain' missing parameterless constructor. E.g. public FuturesChain() { }

Potential Solution

N/A

Reproducing the Problem

Run the algorithm above

System Information

QC Cloud

Checklist

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