Collada to JSON

I tried using Google’s converter to convert my DAE file, but I get this error:

[0810/231737:FATAL:import/cross/] Assert failed: num_bones == skin_controller->GetJointCount().
Trace/BPT trap

Does anyone know what this would mean?

And attached is the DAE file and here is the converter I used:

Any ideas are welcome.

You may want to ask the O3D forum about this.
This seems to be the official blog:

Otherwise, maybe there is a bug in your collada file, have you tried the coherency test ?