Fail to generate LOD meshes importing as glTF in Godot Editor

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:bust_in_silhouette: Asked By lamdeyton

Hi, Everyone,
I just follow the instructions which is at: Mesh level of detail (LOD) — Godot Engine (stable) documentation in English, try to generate lod mesh automatically importing as glTF in Godot Editor. But it failed. Please give me some guidance about that. Thanks in advance!