Small item to note (and apologies if I am in error)...
In following your Unity dev guide for ver. 53.2 for building a simple app:
https://developer.magicleap.cloud/learn/docs/guides/unity/getting-started/unity-building-simple-app
It instructs:
- Locate the Main Camera prefab in
Packages/Magic Leap SDK/Tools/Prefabs
and drag it into the scene.
There is no Tools folder. The Main Camera prefab appears in the Runtime folder. Not a big issue, but you may want to update your docs.