Pretrain Data

In './script/Decoder_pretrain/exp_fullshot_8M.sh', you seemed to put pretrain data in the folder named '/home/Decoder_version_1/data/pretrain_datasets/monash_csv_downsmp'.
However, I could not find that folder.
Could you please tell me how can I prepare the data for pretraining, or how where can I download the dataset? 
Wish you a nice day.