Issues about data preparation

[axuan731]

EEND-master/egs/mini_librispeech/v1/utils/validate_data_dir.sh: no such directory data/simu/data/train_clean_5_ns2_beta2_10
run.pl: job failed, log is in data/simu/.work/random_mixture_train_clean_5_ns2_beta2_10.log
utils/split_scp.pl: error: empty input scp file data/simu/.work/mixture_train_clean_5_ns2_beta2_10.scp
utils/split_scp.pl: You are splitting into too many pieces! [reduce $nj (10) to be smaller than the number of lines (0) in data/simu/.work/mixture_train_clean_5_ns2_beta2_10.scp]

I don't know how to solve this problem. Thanks a lot for ur help!