Why does my unreal crash when using GPU lightmass in VR?

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Good day guys, I need help. I’m currently doing an small Archviz scene that’s going to be used for VR. Now, I need to bake the lights using GPU lightmass but it crashes unreal immediately and gives this error:

Assertion failed: InstanceDesc.GeometryRHI [File:D:\build++UE5\Sync\Engine\Source\Runtime\Render\Private\Raytracing\RayTracingInstanceBufferUtil.cpp] [Line: 70] Ray tracing instance must have valid geometry

I hope you can help me, thank you so much!

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Okay, I found the solution to my own problem. Will keep this post up for future reference to people.

I have a plane shape in my archviz scene and textured it with my posters, had it transparent and double sided. It seems it was the thing that caused this raytracing error and when I deleted them, everything went a-okay now.

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