I have a " The type or namespace name ‘ARFoundation’ does not exist in the namespace ‘UnityEngine.XR’ (are you missing an assembly reference?)" error in my existing project.
If I create a new project I don’t see this issue and I have installed\uninstalled ARFoundation without success. I noticed a few similar earlier posts but no solution. Are there any suggestions for how to diagnose this?
I am using Unity 2020.3.26f1 and MRTK 2.7.3