I am a beginner to building AR apps and am already stuck before actually doing anything with this message:
NullReferenceException: Object reference not set to an instance of an object
All I have done so far is ticked the HMD loader in XR plug inmanagement.
What does this mean and how do I fix it? Thanks.
You may have more luck starting from our samples: GitHub - Unity-Technologies/arfoundation-samples: Example content for Unity projects based on AR Foundation 