load error

[suqi-123]

this error occurred when loading the model——“Qwen3.5-4B

[KevinAndrewDong]

That's a torch/Triton version mismatch in Studio's environment, not the model. AttrsDescriptor no longer exists in newer Triton, while your torch still imports it, so loading dies before the model starts. Unsloth's own pyproject leaves triton-windows unpinned on Windows (only a floor is set) and notes that torch 2.6 pins Triton 3.2.0, so pip can pull a much newer Triton than torch expects (pyproject.toml). The exact same error was triaged in #2403: either install the Triton version your torch pins, or upgrade torch.

In Studio's environment (the ...\.unsloth\studio\unsloth_studio\ folder in your traceback) check the pair with python -c "import torch, triton; print(torch.__version__, triton.__version__)". If it's torch 2.6, pip install triton-windows==3.2.0.post21 and restart Studio; otherwise install the triton-windows build that matches your torch's pinned Triton, or upgrade torch to match the Triton you have.

[suqi-123]

after trition is successfully installed and restart，occuring this error