Green Cast on Sunset

Hi - I'm new to the giclee printing game upon inheriting a wide format giclee printer (epson stylus GS6000).
I was printing a picture of a sunset last night, and around the sun is a faint green hue.
The printer has been doing a great job printing on canvas - photos, business logos and so on. No complaints. But the sunset is what people look at and I can't ignore the green hue.

Any suggestions? I'm running low on some inks, but as I understand it, that doesn't affect the quality.