官方demo2运行报错：“UnboundLocalError: local variable 'face_texcoords' referenced before assignment”

[SaintZhao]

Traceback (most recent call last):
File "E:\Game_Dev\jrender\demo2-deform.py", line 107, in
main()
File "E:\Game_Dev\jrender\demo2-deform.py", line 63, in main
model = Model(args.template_mesh)
File "E:\Game_Dev\jrender\demo2-deform.py", line 22, in init
self.template_mesh = jr.Mesh.from_obj(template_path, dr_type='n3mr')
File "E:\Game_Dev\jrender\jrender\structures\mesh.py", line 302, in from_obj
return cls(vertices, faces, textures, texture_res, texture_type, dr_type=dr_type,normal_textures=normal_textures,TBN=TBN,with_SSS=with_SSS,face_texcoords=face_texcoords)
UnboundLocalError: local variable 'face_texcoords' referenced before assignment