# NullReferenceException ARSemanticSegmentationManager

**URL:** <https://community.nianticspatial.com/t/nullreferenceexception-arsemanticsegmentationmanager/4259>\
**Category:** I'm Stuck\
**Created:** [January 16, 2024, 2:39pm UTC](https://community.nianticspatial.com/t/nullreferenceexception-arsemanticsegmentationmanager/4259 "2024-01-16T14:39:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JAN](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@JAN](https://community.nianticspatial.com/u/JAN)\
**Post date:** [January 16, 2024, 2:39pm UTC](https://community.nianticspatial.com/t/nullreferenceexception-arsemanticsegmentationmanager/4259/1 "2024-01-16T14:39:04Z")

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Device Redminote 11, android.  
Unity Version 2022.3.6f1

Hello,

when I try run AR I got nullreference on ARSemanticSegmentationManager.

please any idea what i doing wrong? thank you

NullReferenceException: Object reference not set to an instance of an object  
Niantic.Lightship.AR.Semantics.ARSemanticSegmentationManager.GetPackedSemanticsChannelsTexture (UnityEngine.Matrix4x4& samplerMatrix, System.Nullable`1[T] cameraParams) (at ./Library/PackageCache/com.nianticlabs.lightship@7e30bd752f/Runtime/ARFoundation/Overrides/Semantics/ARSemanticSegmentationManager.cs:325)  
Niantic.Lightship.AR.Occlusion.LightshipOcclusionExtension.Update () (at ./Library/PackageCache/com.nianticlabs.lightship@7e30bd752f/Runtime/ARFoundation/Overrides/Occlusion/LightshipOcclusionExtension.cs:703)

 ![image](https://us1.discourse-cdn.com/niantic/original/2X/4/4f10c1cffaf3671e3f30e112378753b603023129.png)

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<div class="post-metadata">

**Author:** ![JAN](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@JAN](https://community.nianticspatial.com/u/JAN)\
**Post date:** [January 16, 2024, 2:52pm UTC](https://community.nianticspatial.com/t/nullreferenceexception-arsemanticsegmentationmanager/4259/2 "2024-01-16T14:52:56Z")

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problem is in Occulusion suppression, if I diseable it, it works.

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**Author:** ![Maverick\_Niantic](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@Maverick\_Niantic](https://community.nianticspatial.com/u/Maverick_Niantic)\
**Post date:** [March 5, 2026, 11:21pm UTC](https://community.nianticspatial.com/t/nullreferenceexception-arsemanticsegmentationmanager/4259/3 "2026-03-05T23:21:09Z")

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