Converting HF model to GGUF doesn't seem to work?

I tried to follow the help instructions given by the setup_env.py script and ran the following command:

python setup_env.py --hf-repo microsoft/BitNet-b1.58-2B-4T -q i2_s
INFO:root:Compiling the code using CMake.
INFO:root:Downloading model microsoft/BitNet-b1.58-2B-4T from HuggingFace to models\BitNet-b1.58-2B-4T...
INFO:root:Converting HF model to GGUF format...
ERROR:root:Error occurred while running command: Command '['C:\\Users\\usr\\anaconda3\\envs\\bitnet-cpp\\python.exe', 'utils/convert-hf-to-gguf-bitnet.py', 'models\\BitNet-b1.58-2B-4T', '--outtype', 'f32']' returned non-zero exit status 1., check details in logs\convert_to_f32_gguf.log

error log:

INFO:hf-to-gguf:Loading model: BitNet-b1.58-2B-4T
Traceback (most recent call last):
  File "C:\Users\usr\Desktop\git\BitNet2\utils\convert-hf-to-gguf-bitnet.py", line 1165, in <module>
    main()
  File "C:\Users\usr\Desktop\git\BitNet2\utils\convert-hf-to-gguf-bitnet.py", line 1143, in main
    model_class = Model.from_model_architecture(hparams["architectures"][0])
  File "C:\Users\usr\Desktop\git\BitNet2\utils\convert-hf-to-gguf-bitnet.py", line 240, in from_model_architecture
    raise NotImplementedError(f'Architecture {arch!r} not supported!') from None
NotImplementedError: Architecture 'BitNetForCausalLM' not supported!

I'm using the latest version of the repository code as of today.

Start with setup_env.py and the failing invocation of utils/convert-hf-to-gguf-bitnet.py, then inspect convert_to_f32_gguf.log and the Model.from_model_architecture call. Reproduce the command with microsoft/BitNet-b1.58-2B-4T and confirm the conversion completes and produces the expected GGUF output.