I am trying to build a recommendation activity using Adobe Target. However, I am not able to load the page to make my changes and gives me the error in the attahced screenshot. FYI: I already have the required extension that the note is asking for.

I am working on builing couple of components using Adobe Target, but it is acting weird, especially, with JS code. All changes I am doing, I can see them in Target, but not when I am using QA links.  Any thoughts?