Using fbx-conv with blender/maya

Hello, i’m trying to load a c3t/c3b created with fbx-conv from a fbx exported with blender and maya but the tool always crash building the binary, and as for the text, it always crashes in runtime, while creating the Sprite3D.
I downloaded the src code and compile fbx-conv and find out it sometimes crashes while trying to access an empty animation keyframe array, and with others fbx it crashes because it doesn’t find any mesh.
So my question is, is there an especific export settings in blender or maya to make fbx-conv to work correctly?

Also, fyi, the tool in cocos doesn’t export even the sample fbx from the source code, just the knight one.

Thanks in advance!