Running this in jupyter notebook:
start = datetime.date.today() - datetime.timedelta(days=5 * 365)
end = datetime.date.today()
df = web.DataReader(["sp500", "NASDAQCOM", "CBBTCUSD"], "fred", start, end)
Gives me this error:
[*********************100%%**********************] 3 of 3 completed
3 Failed downloads:
['CBBTCUSD', 'NASDAQCOM', 'SP500']: Exception('%ticker%: No timezone found, symbol may be delisted')
How can I resolve it?

I tried modifying the time zone, and looking up the tickers on the FRED website, but that didn't help much either.