can not open 3mf file which gen by microsoft 3d builder

Description of the problem

i run code in https://github.com/mrdoob/three.js/blob/master/examples/webgl_loader_3mf.html,
it works well with

https://raw.githubusercontent.com/mrdoob/three.js/master/examples/models/3mf/cube_gears.3mf

but i try my 3mf file which build by microsoft 3d build,it doesn’t work.in console it show me:

Uncaught TypeError: Cannot read property ‘triangles’ of undefined
at buildMesh (:475:58)
at buildMeshes (:564:27)
at THREE.ThreeMFLoader.parse (:599:16)
at Object.onLoad (:23:18)
at XMLHttpRequest. (three.min.js?v=cockg0o1gkc:644)

my 3mf file is here,
i want to show this but,i don’t know how to fix this problem

Three.js version
  • Dev
  • r88
Browser
  • All of them
  • Chrome
  • Firefox
  • Internet Explorer
OS
  • All of them
  • Windows
  • macOS
  • Linux
  • Android
  • iOS
Hardware Requirements (graphics card, VR Device, …)

Author: Fantashit

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