Testing Defog brings no results

[Dominoarte]

from defogging import Defog

in_name = "/Driectory//MS230321_14.49.37.png"
out_name = "Directory/MS230321_14.49.37_defog.png"
print('Defog process start')
df = Defog()
df.read_img(in_name)
print('Defog read ended')
df.defog()
print('Defog ended')
df.save_img(out_name)
print('Defog process ended')

output from script:

%Run MS_Defog_Test.py
Defog process start
Defog read ended

then nothing