Segmentation fault

[reBiocoder]

environment：

ubuntu18 Torch7 gcc version 4.8.5 (Ubuntu 4.8.5-4ubuntu8) lua5.2 python2.7 only CPU

problem

while i run command th train.lua -data_file data/demo-train.hdf5 -val_data_file data/demo-val.hdf5 -savefile demo-model -gpuid -1 output:

Segmentation fault

What is the reason for this? thx.