Normals Pass - black instead of blue

[XtopherSalmon]

Hello everyone! Not sure what I may be doing wrong, but I am trying to get a normals pass to render (for relighting in After Effects) and in every attempt, the render has black instead of blue tones that looks almost like shadows (I've attached a sample). As a result, the relighting won't work correctly; is there a way to change this? Thanks so much for any advice/tips you may have for this issue!