Pandas Datareader: Why do I get Type Error

Question

import pandas as pd import pandas_datareader.data as web import datetime

start = datetime.datetime(2020,1,1) end = datetime.datetime(2021,1,1)

web.DataReader('GOOGL','yahoo',start,end)

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What is wrong with this code ? Why am I getting this error ?

TypeError Traceback (most recent call last) TypeError: string indices must be integers

I was expecting to extract the data from Yahoo Finance