Fixing Magic Leap SDK Linking Errors in Unity
The error "UnityEngine.XR.MagicLeap.MLEyes::Update in LuminUnity :: 2019.3 SDK 23 MagicLeap, Unity 2019.3 MagicLeap SDK 23 Linking Error: Mono.Cecil.ResolutionException: Failed to resolve UnityEngine.XR.InputFeatureUsage" is typically caused by an issue with the Unity project's XR settings, specifically with the InputFeatureUsage. To resolve this issue:
Open the Unity project and navigate to the XR settings under the "Player" settings.
In the XR settings, make sure that the "Virtual Reality Supported" checkbox is enabled and that the "Magic Leap" device is selected in the "Virtual Reality SDKs" list.
Check if the version of the Magic Leap SDK that you are using is compatible with the version of Unity you are using. You can check the version of SDK and Unity you are using and match it to the version that is supported
Verify that all the dependencies for the Magic Leap SDK are correctly installed and linked in your project. This includes ensuring that the correct .dll files are referenced in the project and that the correct namespaces are being used.
Try to clean the Unity project, Rebuild the project and restart the Unity.
If the issue persists, it may be necessary to seek help from the Magic Leap developer forums or community, or to contact Magic Leap's support team for further assistance.
