Fitnesse - Error logging out

Question

Hi, I'm running into an error at the end of the test. 
 As the test runs the included Log out and Tear Down, the system is presenting an error: 
 __EXCEPTION__:org.openqa.selenium.WebDriverException: unknown error: Cannot read property 'click' of null I haven't touched the included static page for tear down, and I'm wondering what in the main script could affect this. It has worked in the recent past. Thanks.

Michael Chirlin · Answer

For all of my tests I create a scenario in the scenario library called "safe logout" which is defined as:

!**> Safe Logout
!|scenario|safe logout |
|open |${sites.url}/logout|
**!

The sites.url is pulled from the custom.properties and used in suite set ups.

This scenario is used at the beginning of each test in a suite before logging in to ensure that I am logged out before logging in.