templateIRI is marked non-null but is null

When coptinuing with the tutorial I can finish all steps but the last, where I get the lutra error "Exception in thread "main" java.lang.NullPointerException: templateIRI is marked non-null but is null"

A possible problem? When I follow the tutorial, and press "TAB" after filling in a name for the stottr file, no file is created, should it be? - The tutorial only says "the file should be ready", but what does that mean?

I have created the "./stottr" directory before this step.

Maybe some of the names should be with/without prefix?