Mask output error (Run IDM-VTON Inference)

[torealise]

When I try to output the mask from Run IDM-VTON Inference, I get error:

Error occurred when executing MaskPreview+:

list index out of range

File "/workspace/ComfyUI/execution.py", line 141, in recursive_execute
input_data_all = get_input_data(inputs, class_def, unique_id, outputs, prompt, extra_data)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/workspace/ComfyUI/execution.py", line 26, in get_input_data
obj = outputs[input_unique_id][output_index]

[torealise]

[spenpal]

Just curious, do you expect MASK to be different than mask_img?