numap-scan not working with Greatfet One

I recently acquired a Greatfet One to fuzz USB ports.

After some digging I came to the following conclusion :

umap2 support the FaceDancer, not the Greatfet One (but nu-map does, so here I am),
nu-map relies on greatscottgadgets/Facedancer

So far I managed to get the FaceDancer's example/rubber-ducky.py script working on my Greatfet. (I used this fork MatthewTingum/Facedancer)

I then tried to run numap-scan but I started facing errors, some that I managed to fix :

missing parenthsis at numap/dev/smartcard.py:468
trying to encode bytes at numap/core/usb_cs_interface.py:63(here I removed the .encode("utf-8"))

But there is one issue I can't figure out how to fix, the

ERROR:numap:Traceback (most recent call last):
  File "/home/ju/.local/lib/python3.10/site-packages/numap/apps/scan.py", line 50, in run
    device.run()
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/USBDevice.py", line 165, in run
    self.scheduler.run()
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/core.py", line 509, in run
    task()
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/USBDevice.py", line 83, in <lambda>
    self.scheduler.add_task(lambda : self.maxusb_app.service_irqs())
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/backends/greatdancer.py", line 766, in service_irqs
    self._handle_transfer_events()
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/backends/greatdancer.py", line 472, in _handle_transfer_events
    self._handle_transfer_complete_on_endpoint(i, self.HOST_TO_DEVICE)
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/backends/greatdancer.py", line 555, in _handle_transfer_complete_on_endpoint
    self.connected_device.handle_request(self.pending_control_request)
  File "/usr/local/lib/python3.10/site-packages/facedancer-2.9+dirty-py3.10.egg/facedancer/USBDevice.py", line 216, in handle_request
    if index < len(self.configuration.interfaces):
AttributeError: 'NoneType' object has no attribute 'interfaces'

You will find attached the complete log (at some point it is stuck waiting, so I interrupted it 2 or 3 times).

numap2.log

So I am wondering, can anyone reproduce the issue ? Does someone has a clue of what I could be doing wrong ?

Am I at the wrong place, should I post in the FaceDancer repo instead ?

If you need any additional information feel free to ask.

usb-tools / nu-map

numap-scan not working with Greatfet One #16