Hi, I'm encountering some confusions in reproducing the results on the LOL dataset, when I set the “gt_root” and “input_root” of the dataset in the "infer.yaml" to be the same, I find that the illumination of the output results is not enhanced, whereas when the ”gt_root” is set to be the path of reference images, the results turn out to be normal. Is it necessary to have a reference image in the inference stage to get the restored normal-light result? But in real scenes we can only get low-light images, so how to test it on the unpaired dataset?