When I execute this:
assets = results.index.levels[1].unique()
pricing = get_pricing(assets, start_date='2016-01-01', end_date='2017-01-31', fields='open_price')
I get this error:
HTTPError: 500 Server Error: INTERNAL SERVER ERROR for url: http://localhost:8080/api/pricing
Yesterday it works fine, but I receive this error today.