Streaming the app texture from ML2 glasses to desktop user

Do you mind providing more information about your implementation? Based on the logs the error is coming from your implementation of streaming the viewport from the Magic Leap. Specifically Byn.Unity.Examples.VirtualCamera.Update()

Have you considered getting the image of the Virtual Content using the Magic Leap Camera API? The Main Camera Stream can be configured to stream either Mixed Reality or Virtual only content. These will display what the virtual content from the user's point of view.