Error occurred when executing Image Save with Prompt File (WLSH):

[vxkj1211]

Error occurred when executing Image Save with Prompt File (WLSH):

unknown file extension: .100

File "D:\Blender_ComfyUI\ComfyUI\execution.py", line 153, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
File "D:\Blender_ComfyUI\ComfyUI\execution.py", line 83, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
File "D:\Blender_ComfyUI\ComfyUI\execution.py", line 76, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
File "D:\Blender_ComfyUI\ComfyUI\custom_nodes\wlsh_nodes\wlsh_nodes.py", line 1397, in save_files
paths = self.save_images(images, output_path,filename,comment, extension, quality, prompt, extra_pnginfo)
File "D:\Blender_ComfyUI\ComfyUI\custom_nodes\wlsh_nodes\wlsh_nodes.py", line 1439, in save_images
img.save(os.path.join(output_path, file))
File "D:\Blender_ComfyUI\python_embeded\lib\site-packages\PIL\Image.py", line 2411, in save
raise ValueError(msg) from e