FitNesse For Appian Driver Issue

A Score Level 2

HI all. I've just installed FitNesse For Appian, and edited the example test as required.

I'm getting this error despite

reinstalling the app in different paths

downloading and installing the latest Chrome driver (v78)

tried explicitly setting the chrome.driver.home in file

despite these efforts, the NULL fragment persists.

The driver executable does not exist: C:\FitNesse\FitNesseForAppian\null\lib\drivers\chromedriver.exe

Does anyone know what the issue might be?

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