Hi, when doing a History request I am getting an error: `AttributeError : 'Series' object has no attribute 'volume`. I was having some trouble earlier with some tickers giving other errors and was able to resolve them with suggestions in this post 


but am now having some additional problems. I attached a backtest with the offending lines commented out (lines 76 and 77, with lines 78 and 79 also being commented out as example of what I was trying to do). If anyone would know the issue it would be greatly appreciated. Thanks.