09:02:54.981 [Warning] [ComfyUI-0/STDERR] Traceback (most recent call last):
09:02:54.982 [Warning] [ComfyUI-0/STDERR]   File "C:\SwarmUI\dlbackend\comfy\ComfyUI\execution.py", line 152, in recursive_execute
09:02:54.983 [Warning] [ComfyUI-0/STDERR]     output_data, output_ui = get_output_data(obj, input_data_all)
09:02:54.984 [Warning] [ComfyUI-0/STDERR]                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
09:02:54.985 [Warning] [ComfyUI-0/STDERR]   File "C:\SwarmUI\dlbackend\comfy\ComfyUI\execution.py", line 82, in get_output_data
09:02:54.986 [Warning] [ComfyUI-0/STDERR]     return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
09:02:54.987 [Warning] [ComfyUI-0/STDERR]                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
09:02:54.987 [Warning] [ComfyUI-0/STDERR]   File "C:\SwarmUI\dlbackend\comfy\ComfyUI\execution.py", line 75, in map_node_over_list
09:02:54.988 [Warning] [ComfyUI-0/STDERR]     results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
09:02:54.989 [Warning] [ComfyUI-0/STDERR]                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
09:02:54.995 [Warning] [ComfyUI-0/STDERR]   File "C:\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\ComfyUI_bitsandbytes_NF4\__init__.py", line 178, in load_checkpoint
09:02:54.995 [Warning] [ComfyUI-0/STDERR]     out = comfy.sd.load_checkpoint_guess_config(ckpt_path, output_vae=True, output_clip=True, embedding_directory=folder_paths.get_folder_paths("embeddings"), model_options={"custom_operations": OPS})
09:02:54.996 [Warning] [ComfyUI-0/STDERR]           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
09:02:54.997 [Warning] [ComfyUI-0/STDERR] TypeError: load_checkpoint_guess_config() got an unexpected keyword argument 'model_options'
09:02:54.998 [Warning] [ComfyUI-0/STDERR]
09:02:55.070 [Error] [BackendHandler] backend #0 failed to load model with error: ComfyUI execution error: load_checkpoint_guess_config() got an unexpected keyword argument 'model_options'
09:02:55.071 [Warning] [BackendHandler] backend #0 failed to load model flux1-dev-bnb-nf4-v2.safetensors
09:02:55.913 [Warning] [BackendHandler] All backends failed to load the model! Cannot generate anything.
09:02:55.914 [Error] [BackendHandler] Backend request #1 failed: All available backends failed to load the model.
09:02:55.915 [Error] [BackendHandler] Backend request #1 failed: All available backends failed to load the model.