Error with web.DataReader

[Larz60+]

This is a valid error.

It is always necessary to post the traceback with any error

your request produces:

Error:
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "C:\Python36\lib\site-packages\pandas_datareader\data.py", line 133, in DataReader
   session=session).read()
 File "C:\Python36\lib\site-packages\pandas_datareader\base.py", line 157, in read
   params=self._get_params(self.symbols))
 File "C:\Python36\lib\site-packages\pandas_datareader\base.py", line 74, in _read_one_data
   out = self._read_url_as_StringIO(url, params=params)
 File "C:\Python36\lib\site-packages\pandas_datareader\base.py", line 85, in _read_url_as_StringIO
   response = self._get_response(url, params=params)
 File "C:\Python36\lib\site-packages\pandas_datareader\base.py", line 120, in _get_response
   raise RemoteDataError('Unable to read URL: {0}'.format(url))
pandas_datareader._utils.RemoteDataError: Unable to read URL: http://www.google.com/finance/historical?q=NBL&startdate=Jun+20%2C+2017&enddate=Jun+20%2C+2017&output=csv

If you try to connect to that url, you'll get a 400 status code (URL not found)