# UE5.3 LandScape LightMap error with GPULightMass

**URL:** <https://forums.unrealengine.com/t/ue5-3-landscape-lightmap-error-with-gpulightmass/1330442>\
**Category:** Rendering\
**Tags:** unreal-engine, bug-report, Rendering, Lighting, question\
**Created:** [October 12, 2023, 2:47pm UTC](https://forums.unrealengine.com/t/ue5-3-landscape-lightmap-error-with-gpulightmass/1330442 "2023-10-12T14:47:34Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [April 18, 2024, 4:15pm UTC](https://forums.unrealengine.com/t/ue5-3-landscape-lightmap-error-with-gpulightmass/1330442/2 "2024-04-18T16:15:01Z")

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hi @zhushiboai  
You will need the patch to UE 5.3 to make this work see  
[GPU Lightmass not working on Landscape 5.3 patch](https://forums.unrealengine.com/t/gpu-lightmass-not-working-on-landscape/1371174/17)

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