The instance scriptTableActor.open. does not exist error given when i run script in fitnesse

When i try to run my script for testing in fitnesse i get these errors browser test Could not invoke constructor for BrowserTest[0]

The instance scriptTableActor.takeScreenshot. does not exist

open The instance scriptTableActor.open. does not exist

!|storyboard|browser test | |open |https://ori.clow.nl/~s1144471/quiz/|

this is my testscript

please guide