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0

Found in [Package]

7.0.0

Issue ID

MXPB-8

Regression

Yes

Error “NullReferenceException: Object reference not set to an instance of an object“ when ML Spatial Mapper Component is added

Package: Magic Leap XR Plugin

-

Reproduction steps:
1. Open the attached project "ReproProj"
2. Open the “/Assets/Scenes/SampleScene.unity” Scene
3. In Hierarchy, select the “Directional Light” GameObject
4. Observe the Console window

Expected result: No errors are present
Actual result: Error “NullReferenceException: Object reference not set to an instance of an object“ is spammed

Reproducible with: 7.0.0-exp.3 (2022.2.16f1), 7.0.0 (2021.3.35f1, 2022.3.20f1, 2023.2.12f1, 2023.3.0b9)
Not reproducible with: 6.4.2-preview.2 (2022.2.16f1)

Reproducible on: Windows 10 Enterprise 21H2
Not reproducible on: No other environment tested

Workaround:
In MLSpatialMapper.cs (Packages/com.unity.xr.magicleap/Runtime/Meshing/MLSpatialMapper.cs), change line:
{{m_MeshType = this.serializedObject.FindProperty("m_MeshType"); }}
to:
{{m_MeshType = this.serializedObject.FindProperty("m_RequestedMeshType");}}

  1. Resolution Note:

    The `FormerlySerializedAs` attribute is only meant to be used for serialized objects on disk, not for serialized objects in memory which is what the FindProperty() function works on.
    The recommended solution is to update the string used in the FindProperty() function.

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