Ch 8 03_ml4t_with_zipline.ipynb error

[jzkoh2010]

I’m running into an error when I run run_algorithm. Would anyone be able to help please? Thank you.

go = time()
results = run_algorithm(start=start,
                        end=end,
                        initialize=initialize,
                        before_trading_start=before_trading_start,
                        capital_base=1e6,
                        data_frequency='daily',
                        benchmark_returns=None,
                        bundle='quandl')

print('{:.2f}'.format(time()-go))