HI all, I am new to Fitnesse. I am trying to launch a browser and not able to can any one please help me

!define TEST_SYSTEM {slim}
!path C:\Users\OmSaiRam\FitNesse for Appian Combined Files 1142020\FitNesseForAppian

!*** Initialization

!| script | com.appiancorp.ps.automatedtest.fixture.TempoFixture |

| setup selenium web driver with browser | FIREFOX |
| set appian url to | https://forum.appian.com/suite |
| set appian version to | 16.3 |