how to loading the datat

[TianPeng09]

when I try to run this project, there is a problem that the data is zero. and i find a prblem in the code : in main.py the 126 line .
for i ,filename in enumerate(os.listdir(x_path)):
if filename.split('.')[-1] == 'npy':
names.append(filename)
the problem is that in the data there is no data with the end of .npy
so how to solve this problem and I definitely sure that i cannot run because of the data