title: yfinance json.decoder.JSONDecodeError
body: <p>It had been working all the time before today.
  I don't know why it doesn't work today.</p>
  <pre class="lang-py prettyprint-override"><code>import yfinance as yf
  df = yf.Ticker('MMM').history(start='2021-01-01',end='2021-07-10')
  </code></pre>
  <pre><code>File &quot;D:\anaconda3\envs\tensorflow\lib\site-packages\yfinance\base.py&quot;, line 157, in history
  data = data.json()
  File &quot;D:\anaconda3\envs\tensorflow\lib\site-packages\requests\models.py&quot;, line 900, in json
  return complexjson.loads(self.text, **kwargs)
  File &quot;D:\anaconda3\envs\tensorflow\lib\json\__init__.py&quot;, line 357, in loads
  return _default_decoder.decode(s)
  File &quot;D:\anaconda3\envs\tensorflow\lib\json\decoder.py&quot;, line 337, in decode
  obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File &quot;D:\anaconda3\envs\tensorflow\lib\json\decoder.py&quot;, line 355, in raw_decode
  raise JSONDecodeError(&quot;Expecting value&quot;, s, err.value) from None
  json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
  </code></pre>