WanVideoSampler TypeError: expected str, bytes or os.PathLike object, not NoneType

### Custom Node Testing

- [ ] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

error

### Actual Behavior

An error occurred when running Kijai's wan2.2_I2V

### Steps to Reproduce

### Debug Logs

```powershell
# ComfyUI Error Report
## Error Details
- **Node ID:** 27
- **Node Type:** WanVideoSampler
- **Exception Type:** torch._inductor.exc.InductorError
- **Exception Message:** TypeError: expected str, bytes or os.PathLike object, not NoneType

Set TORCHDYNAMO_VERBOSE=1 for the internal stack trace (please do this especially if you're reporting a bug to PyTorch). For even more developer context, set TORCH_LOGS="+dynamo"

## Stack Trace

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\execution.py", line 515, in execute
output_data, output_ui, has_subgraph, has_pending_tasks = await get_output_data(prompt_id, unique_id, obj, input_data_all, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, v3_data=v3_data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\execution.py", line 329, in get_output_data
return_values = await _async_map_node_over_list(prompt_id, unique_id, obj, input_data_all, obj.FUNCTION, allow_interrupt=True, execution_block_cb=execution_block_cb, pre_execute_cb=pre_execute_cb, v3_data=v3_data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\execution.py", line 303, in _async_map_node_over_list
await process_inputs(input_dict, i)

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\execution.py", line 291, in process_inputs
result = f(**inputs)
^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper\nodes_sampler.py", line 3190, in process
raise e

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper\nodes_sampler.py", line 3054, in process
noise_pred, noise_pred_ovi, self.cache_state = predict_with_cfg(
^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper\nodes_sampler.py", line 1664, in predict_with_cfg
raise e

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper\nodes_sampler.py", line 1533, in predict_with_cfg
noise_pred_cond, noise_pred_ovi, cache_state_cond = transformer(
^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\nn\modules\module.py", line 1751, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\nn\modules\module.py", line 1762, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\custom_nodes\ComfyUI-WanVideoWrapper\wanvideo\modules\model.py", line 3014, in forward
x, x_ip, lynx_ref_feature, x_ovi = block(x, x_ip=x_ip, lynx_ref_feature=lynx_ref_feature, x_ovi=x_ovi, x_onetoall_ref=x_onetoall_ref, onetoall_freqs=onetoall_freqs, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\nn\modules\module.py", line 1751, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\nn\modules\module.py", line 1762, in _call_impl
return forward_call(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_dynamo\eval_frame.py", line 663, in _fn
raise e.remove_dynamo_frames() from None # see TORCHDYNAMO_VERBOSE=1
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\compile_fx.py", line 760, in _compile_fx_inner
raise InductorError(e, currentframe()).with_traceback(

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\compile_fx.py", line 745, in _compile_fx_inner
mb_compiled_graph = fx_codegen_and_compile(
^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\compile_fx.py", line 1295, in fx_codegen_and_compile
return scheme.codegen_and_compile(gm, example_inputs, inputs_to_check, graph_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\compile_fx.py", line 1197, in codegen_and_compile
compiled_fn = graph.compile_to_module().call
^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\graph.py", line 2083, in compile_to_module
return self._compile_to_module()
^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\graph.py", line 2091, in _compile_to_module
self.codegen_with_cpp_wrapper() if self.cpp_wrapper else self.codegen()
^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\graph.py", line 2002, in codegen
self.scheduler.codegen()

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\scheduler.py", line 4135, in codegen
else self._codegen(self.nodes)
^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\scheduler.py", line 4264, in _codegen
self.get_backend(device).codegen_node(node)

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\codegen\cuda_combined_scheduling.py", line 104, in codegen_node
return self._triton_scheduling.codegen_node(node)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\codegen\simd.py", line 1320, in codegen_node
return self.codegen_node_schedule(
^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\codegen\simd.py", line 1365, in codegen_node_schedule
src_code = kernel.codegen_kernel()
^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\codegen\triton.py", line 3623, in codegen_kernel
**self.inductor_meta_common(),
^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\_inductor\codegen\triton.py", line 3447, in inductor_meta_common
"backend_hash": torch.utils._triton.triton_hash_with_backend(),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\torch\utils\_triton.py", line 112, in triton_hash_with_backend
key = f"{triton_key()}-{backend.hash()}"
^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\triton\backends\nvidia\compiler.py", line 336, in hash
version = get_ptxas_version()
^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\triton\backends\nvidia\compiler.py", line 38, in get_ptxas_version
version = subprocess.check_output([_path_to_binary("ptxas")[0], "--version"]).decode("utf-8")
^^^^^^^^^^^^^^^^^^^^^^^^

File "D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\python\Lib\site-packages\triton\backends\nvidia\compiler.py", line 23, in _path_to_binary
os.path.join(os.environ.get("CUDA_PATH"), "bin", binary),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "", line 108, in join

## System Information
- **ComfyUI Version:** 0.4.0
- **Arguments:** D:\AIGC\ComfyUI-aki(2)\ComfyUI-aki-v1.7\ComfyUI-aki-v1.7\ComfyUI\main.py --auto-launch --preview-method auto --use-sage-attention --normalvram --disable-smart-memory --disable-cuda-malloc --cpu-vae --reserve-vram 8
- **OS:** win32
- **Python Version:** 3.11.9 (tags/v3.11.9:de54cf5, Apr 2 2024, 10:12:12) [MSC v.1938 64 bit (AMD64)]
- **Embedded Python:** false
- **PyTorch Version:** 2.7.0+cu128
## Devices

- **Name:** cuda:0 NVIDIA GeForce RTX 3070 Laptop GPU : cudaMallocAsync
- **Type:** cuda
- **VRAM Total:** 8589410304
- **VRAM Free:** 7341307092
- **Torch VRAM Total:** 201326592
- **Torch VRAM Free:** 139687124
```

### Other

Start with the traceback locations in custom_nodes/ComfyUI-WanVideoWrapper/nodes_sampler.py, especially lines 3054 and 3190, and then inspect the reported Triton and CUDA_PATH calls. Reproduce the WanVideoSampler workflow on the stated Windows, Python, PyTorch, and GPU setup; done means the sampler runs without the NoneType path error.

Written by the indexing model from the issue text.