title: Selenium WebDriverException: Reached error page
body: <p>I am following a Django TDD tutorial at:<br>
  <a href="http://www.marinamele.com/taskbuster-django-tutorial/taskbuster-working-environment-and-start-django-project" rel="noreferrer">http://www.marinamele.com/taskbuster-django-tutorial/taskbuster-working-environment-and-start-django-project</a><br>
  I get the following error when running <em>'all_users.py'</em> before and after I start the development server <em>'python manage.py runserver'</em>:  </p>
  
  <blockquote>
    <p>Traceback (most recent call last):
     File "functional_tests/all_users.py", line 15, in test_it_worked
       self.browser.get('<a href="http://localhost:8000" rel="noreferrer">http://localhost:8000</a>')
     File "/Users/samgao/.virtualenvs/tb_test/lib/python3.6/site->packages/selenium/webdriver/remote/webdriver.py", line 264, in get
       self.execute(Command.GET, {'url': url})
     File "/Users/samgao/.virtualenvs/tb_test/lib/python3.6/site->packages/selenium/webdriver/remote/webdriver.py", line 252, in execute
       self.error_handler.check_response(response)
     File "/Users/samgao/.virtualenvs/tb_test/lib/python3.6/site->packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
       raise exception_class(message, screen, stacktrace)
    selenium.common.exceptions.WebDriverException: Message: Reached error page: >about:neterror?e=connectionFailure&amp;u=http%3A//localhost%3A8000/&amp;c=UTF->8&amp;f=regular&amp;d=Firefox%20can%E2%80%99t%20establish%20a%20connection%20to%20the%20s>erver%20at%20localhost%3A8000.  </p>
  </blockquote>
  
  <p>Basically the connection to localhost cannot be established.<br>
  The settings and configurations are identical to the tutorial in the previous link.  </p>
  
  <p>I have been struggling with the issue for two days, and would thank you most kindly if you could provide any help.</p>