Hola ! working through this and getting three compile errors on loading Baker.
pretty sure a couple primary assets have iterated since you did this, specifically arkKit 2.0.
thoughts?
Assets/UnityARKitPlugin/Plugins/iOS/UnityARKit/Helpers/UnityARCameraManager.cs(34,11): error CS1061: 'ARKitWorldTrackingSessionConfiguration' does not contain a definition for 'arResourceGroupName' and no extension method 'arResourceGroupName' accepting a first argument of type 'ARKitWorldTrackingSessionConfiguration' could be found (are you missing a using directive or an assembly reference?)
It's possible something did get updated and it's causing the error with the older project files. I'll take a look at them and see if I can update them to the latest version.
I nuked the project assets I had accrued walking thru the course and imported the complete ardev package I downloaded with the assets you provide. I'm able to forge ahead without error. I suspect this is because the ARkit you have bundled in your package is not the 2.0 that comes from today bitbucket repo. As an interim fix to anyone else - this works. thx !