No data found for this date range

[lenovo520]

I am using the code given as an example with yFinance and I am receiving the following result. Why is this?

import yfinance as yf
dat = yf.Ticker("MSFT")
tickers = yf.Tickers('MSFT AAPL GOOG')
tickers.tickers['MSFT'].info
yf.download(['MSFT', 'AAPL', 'GOOG'], period='1mo')

3 Failed downloads:

• GOOG: No data found for this date range, symbol may be delisted
• MSFT: No data found for this date range, symbol may be delisted
• AAPL: No data found for this date range, symbol may be delisted

[ValueRaider]

Submit bug report

[lenovo520]

Thank you. While looking at the bug report criteria, it stated to follow these instructions.

Are you up-to-date?

Upgrade to the latest version: $ pip install yfinance --upgrade --no-cache-dir

Confirm latest version by running: import yfinance as yf ; print(yf.version) and comparing against PyPI.

My version was 0.1.7.0. So I upgraded with the following: pip install yfinance --upgrade --no-cache-dir and restarted the kernal, but I still have the same version. Why is this?