FitNesse for Appian Error - EXCEPTION__:java.lang.NullPointerException

i'm new to dabbling in Appian and FitNesse and I've hit upon some errors.

Most I have resolved myself by applying common sense but I'm stuck on the test example.

The error appears under the user id section

User id is not SAML

I am using Firefox V66.0.3 (64-bit)

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