file miss ade20k/ADE20K_2016_07_26/index*.mat

When I run the train.py, I meet the error of No such file.
And I thank the broden_dataset_root should be change to fit the dataset.
Althouth I download the broden1_382 datasets as described in the NetDissect, I still can't find the file NetDissect/dataset/broden1_384/images/ade20k/ADE20K_2016_07_26/index*.mat.
Could you give me some advice in download and process the dataset?
Thank you very much.
class BrodenDataset:
def __init__(self, test_limit=None):
broden_dataset_root = "/afs/csail.mit.edu/u/l/liuyingcheng/code/NetDissect/dataset_toy"#????