Error: Version 6100 unsupported, must be 7100 or later

[ismeyueyue]

Hi, when I try to convert .fbx file to .bvn file on my linux, the bbland error occurs.
Do you have any ideas, thanks a lot.

Read blend: /home/xxx/Code/dae_fbx_to_bvh/dae_fbx_to_bvh.blend
FBX Import: start importing /home/xxx/Code/dae_fbx_to_bvh/xxx.fbx
Error: Version 6100 unsupported, must be 7100 or later
Error: Version 6100 unsupported, must be 7100 or later
Traceback (most recent call last):
  File "/home/xxx/Code/dae_fbx_to_bvh/dae_fbx_to_bvh.py", line 64, in <module>
    ignore_leaf_bones=True)
  File "/usr/share/blender/scripts/modules/bpy/ops.py", line 189, in __call__
    ret = op_call(self.idname_py(), None, kw)
RuntimeError: Error: Version 6100 unsupported, must be 7100 or later

Blender quit