Cannot open source file "CesiumGeoreference.h"

Hi,

I am trying to follow along the “Build a Flight Tracker with Cesium for Unreal” (Build a Flight Tracker with Cesium for Unreal – Cesium). When trying to include a header file i get the error that it can not be found in the project. Any tips to fix this?

My first guess is that you may have missed step 2.2?