Help me, "error in .json file" in Blender

I try to fix the big head problem of evan turner, But when I export the .model, it's failed.
"error in .json file", It's showed.
I think maybe there some problem in the 2k17_tools. But I dont know why. Does anyone can help me?
The pic show the result after I click the export.
In the screenshot, hihead is facialhair.SCEN, hihead001 is hair.SCEN, hihead002 is hihead.SCEN
PLZ help me!!!

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Import first the body model.
the model must be hihead, the hair hihead001 and the facialhair 002.