Install Blender exporter failed in blender 3.3.2

Blender2Babylon-3.3x.zip works perfectly fine in Blender 3.6 and can be installed and exported normally. But in Blender 4.0, 4.2, 4.3 can be installed normally, no error message, but the error dialog box pops up when exporting to babylon format, see the attached picture shown. blender starts up and exports directly, no extra operation. How to solve it?

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