Cannot run `backtest_strategies.py`

[Beliavsky]

Using Python 3.13.1, running python backtest_strategies.py

Enter a stock ticker: TSLA
Enter number of years: 10
Traceback (most recent call last):
  File "c:\python3\code\public_domain\github\Finance\portfolio_strategies\backtest_strategies.py", line 86, in <module>
    main()
    ~~~~^^
  File "c:\python3\code\public_domain\github\Finance\portfolio_strategies\backtest_strategies.py", line 77, in main
    df = get_stock_data(stock, start, end)
  File "c:\python3\code\public_domain\github\Finance\portfolio_strategies\backtest_strategies.py", line 12, in get_stock_data
    return pdr.get_data_yahoo(stock, start, end)
           ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
  File "c:\programs\Python313\Lib\site-packages\pandas_datareader\data.py", line 80, in get_data_yahoo
    return YahooDailyReader(*args, **kwargs).read()
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "c:\programs\Python313\Lib\site-packages\pandas_datareader\base.py", line 253, in read
    df = self._read_one_data(self.url, params=self._get_params(self.symbols))
  File "c:\programs\Python313\Lib\site-packages\pandas_datareader\yahoo\daily.py", line 152, in _read_one_data
    j = json.loads(re.search(ptrn, resp.text, re.DOTALL).group(1))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'group'