Hello,

I am facing this error while backtesting and somehow it fails after running the backtest until midway. The same code works with smaller universe.

Code Line - 

for time, row in history.loc[symbol].iterrows():

Error - 

Runtime Error: TypeError : object is not callable at OnSecuritiesChanged in main.py:line 52 at __init__ in main.py:line 138 TypeError : object is not callable (Open Stacktrace)

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