SeleneseTest1::testMyTestCase() Invalid response while accessing the Selenium Server at 'http://localhost:4444/selenium-server/driver/':
The server is down or refusing connections

Most likely causes:

    * There might be a typing error in the address.
    * The server you are trying to access is down or unavailable.
    * If you clicked on a link, it may be out of date.

What you can try:

    * Retype the address.
    * Wait and try again later.
    * Go back to the previous page.