Fbx mainimport module crash in my own C++ project

hello,guys.I get stuck in using fbx module in my own C++ project.
I take out the fbx module form the engine’s project and use it in my own project. And in fact it works well except my “fbx module” will crash when closing the project in the end. I show you some pictures.

…first, I don’t know whether I can use fbx in this way.


…and I think it should crash to fbxsdk.dll because I find out it is Singleton pattern.
who can help me pls…I would appreciate it very much.