Unvented atic

I recently came across an attic where the soffits were well ventilated, but there were no vents in the roof. The home was built in 2005. In Florida there is a roofing final inspection. It appears that the building inspector missed it. Not sure if that is an issue, or how serious. There is never any snow in the area, and it rarely gets below 45 degrees, so condensation will not likely be an issue. I’m curious to know how much it will effect the attic temp, and if it really needs to be corrected.
Tom

From what I’ve been told if the have Icynene Spray Foam Insulation no ventilation is necessary. If that was the case.

Roy