How to setup lightmap bake from blender to gltf?

hello,I have some issue about lightmap bake from blender .

mesh create in three.js

and render lightmap in blender then export to gltf with lightmap.

Is my uv unwrap error or something else?
simpleroom.blend (1.3 MB)

simpleroom.glb (3.2 MB)

finally,I got a solution from the blender forum.

May be helped someone who got the same problem .

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