(Tutorial) Simi CelShade PostProcess Material work with light color, point lights and skybox

Hey all, I seem to be having a bit of an issue trying to get this to work. From what I can tell, my issue stems right at the beginning where we are extracting the light info. For some reason, when I check the output of that division node, everything turns white, meaning that no lighting is actually extracted. No idea on what is wrong or how to fix. Any advice?
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