symbols = ["MON", "AAPL", "CSRA"] for symbol in symbols: qb.AddEquity(symbol) end_date = start_date = end_date - timedelta(days=60) history = qb.History(symbols, start_date, end_date, Resolution.Daily)

I'm running the above code in a notebook. If I try to do any of these, I get an error.

history.loc["MON"] # KeyError: 'the label [MON] is not in the [index]' history.loc["CSRA"] # KeyError: 'the label [CSRA] is not in the [index]' history.loc["AAPL"] # works fine

Both MON and CSRA appears to be in your available daily data:*/*/


How comes this crashes my notebook?