'NoneType' object has no attribute 'to' when I try to use AnimateLCM_advanced.json workflow

[wzwz718]

When I try to use AnimateLCM_advanced.json workflow in the code page of this project,it pops a error like below：

`Error occurred when executing SamplerCustom:

'NoneType' object has no attribute 'to'

File "F:\python\ComfyUI_windows_portable\ComfyUI\execution.py", line 152, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
File "F:\python\ComfyUI_windows_portable\ComfyUI\execution.py", line 82, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
File "F:\python\ComfyUI_windows_portable\ComfyUI\execution.py", line 75, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy_extras\nodes_custom_sampler.py", line 271, in sample
samples = comfy.sample.sample_custom(model, noise, cfg, sampler, sigmas, positive, negative, latent_image, noise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=noise_seed)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\sampling.py", line 334, in motion_sample
latents = wrap_function_to_inject_xformers_bug_info(orig_comfy_sample)(model, noise, *args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\utils_model.py", line 272, in wrapped_function
return function_to_wrap(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-AnimateDiff-Evolved\animatediff\sampling.py", line 248, in motion_sample
return orig_comfy_sample(model, noise, *args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\sample.py", line 113, in sample_custom
samples = comfy.samplers.sample(real_model, noise, positive_copy, negative_copy, cfg, model.load_device, sampler, sigmas, model_options=model.model_options, latent_image=latent_image, denoise_mask=noise_mask, callback=callback, disable_pbar=disable_pbar, seed=seed)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes_init_.py", line 149, in sample
return _sample(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 618, in sample
samples = sampler.sample(model_wrap, sigmas, extra_args, callback, noise, latent_image, denoise_mask, disable_pbar)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 557, in sample
samples = self.sampler_function(model_k, noise, sigmas, extra_args=extra_args, callback=k_callback, disable=disable_pbar, **self.extra_options)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\utils_contextlib.py", line 115, in decorate_context
return func(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-sampler-lcm-alternative\sampler_lcm_alt.py", line 32, in sample_lcm_cycle
return sample_lcm_backbone(model, x, sigmas, extra_args, callback, disable, noise_sampler, loop_control, ancestral)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\utils_contextlib.py", line 115, in decorate_context
return func(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-sampler-lcm-alternative\sampler_lcm_alt.py", line 38, in sample_lcm_backbone
denoised = model(x, sigmas[i] * s_in, **extra_args)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\nn\modules\module.py", line 1511, in _wrapped_call_impl
return self._call_impl(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\nn\modules\module.py", line 1520, in _call_impl
return forward_call(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 281, in forward
out = self.inner_model(x, sigma, cond=cond, uncond=uncond, cond_scale=cond_scale, model_options=model_options, seed=seed)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\nn\modules\module.py", line 1511, in _wrapped_call_impl
return self.call_impl(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\python_embeded\lib\site-packages\torch\nn\modules\module.py", line 1520, in call_impl
return forward_call(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 271, in forward
return self.apply_model(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI_smZNodes\smZNodes.py", line 1047, in apply_model
out = super().apply_model(*args, **kwargs)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 268, in apply_model
out = sampling_function(self.inner_model, x, timestep, uncond, cond, cond_scale, model_options=model_options, seed=seed)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\sampling.py", line 370, in evolved_sampling_function
cond_pred, uncond_pred = sliding_calc_cond_uncond_batch(model, cond, uncond, x, timestep, model_options)
File "F:\python\ComfyUI_windows_portable\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\sampling.py", line 478, in sliding_calc_cond_uncond_batch
sub_cond_out, sub_uncond_out = comfy.samplers.calc_cond_uncond_batch(model, sub_cond, sub_uncond, sub_x, sub_timestep, model_options)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\samplers.py", line 222, in calc_cond_uncond_batch
output = model.apply_model(input_x, timestep, **c).chunk(batch_chunks)
File "F:\python\ComfyUI_windows_portable\ComfyUI\comfy\model_base.py", line 82, in apply_model
context = context.to(dtype)`

I'm sure that I have upgraded ComfyUI, ComfyUI-AnimateDiff-Evolved, ComfyUI-VideoHelperSuite and ComfyUI-sampler-lcm-alternative to the latest version, and put 'sd15_t2v_beta.ckpt' & 'sd15_lora_beta.safetensors' in the right place.

[mizzmans]

Error occurred when executing KSampler:

module 'comfy.sample' has no attribute 'prepare_mask'

File "D:\AI\ComfyUI\ComfyUI\execution.py", line 151, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\execution.py", line 81, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\execution.py", line 74, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\nodes.py", line 1344, in sample
return common_ksampler(model, seed, steps, cfg, sampler_name, scheduler, positive, negative, latent_image, denoise=denoise)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\nodes.py", line 1314, in common_ksampler
samples = comfy.sample.sample(model, noise, steps, cfg, sampler_name, scheduler, positive, negative, latent_image,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\custom_nodes\ComfyUI-Impact-Pack\modules\impact\sample_error_enhancer.py", line 9, in informative_sample
return original_sample(*args, **kwargs) # This code helps interpret error messages that occur within exceptions but does not have any impact on other operations.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "D:\AI\ComfyUI\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\sampling.py", line 264, in motion_sample
function_injections.inject_functions(model, params)
File "D:\AI\ComfyUI\ComfyUI\custom_nodes\ComfyUI-AnimateLCM\animatediff\sampling.py", line 198, in inject_functions
self.orig_prepare_mask = comfy.sample.prepare_mask

[bluehood2022]

I encountered the same error only when using the animateDiff-i2v model