'NoneType' object is not subscriptable

[eyalgi11]

Error occurred when executing PreviewImage: 'NoneType' object is not subscriptable

File "D:\ComfyUI_windows_portable\ComfyUI\execution.py", line 154, in recursive_execute output_data, output_ui = get_output_data(obj, input_data_all) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "D:\ComfyUI_windows_portable\ComfyUI\execution.py", line 84, in get_output_data return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "D:\ComfyUI_windows_portable\ComfyUI\execution.py", line 77, in map_node_over_list results.append(getattr(obj, func)(**slice_dict(input_data_all, i))) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "D:\ComfyUI_windows_portable\ComfyUI\nodes.py", line 1415, in save_images full_output_folder, filename, counter, subfolder, filename_prefix = folder_paths.get_save_image_path(filename_prefix, self.output_dir, images[0].shape[1], images[0].shape[0]) ~~~~~~^^^

hi there i get this error from this workflow: workflow.json

workflow is from: https://www.reddit.com/r/comfyui/comments/17qec73/sillytavern_character_expression_workflow/ there is tutorial there on how to use

i using windows, rtx 3090, i7 if there is anything more i need to supply just ask thank you for your help :)