Eye material works while editing but appears black in scene viewport/In game

Development Rendering
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1

Hello,
I imagine the reason is simple but I am no expert.

Eye Material
Eye Material1525×608 73.1 KB
vs
applied material
applied material636×621 146 KB

Tried deconnecting each of the channels on the node individually, but they don’t appear to be solving anything. similarly I tried connecting the rogue parameter node to some channels while playing with the values with no noticeable results.

Thanks!