Error in dataset generation

[Janinanu]

When trying to run the dataset generation command (python create_ubuntu_dataset.py ./generate.sh -t -s -l), I get the following error:

runfile('/home/janinanu/Desktop/Dialogue System/ubuntu-ranking-dataset-creator/src/create_ubuntu_dataset.py', wdir='/home/janinanu/Desktop/Dialogue System/ubuntu-ranking-dataset-creator/src')
Downloading http://cs.mcgill.ca/~jpineau/datasets/ubuntu-corpus-1.0/ubuntu_dialogs.tgz to ./ubuntu_dialogs.tgz
Successfully downloaded ./ubuntu_dialogs.tgz
Unpacking dialogs ...
Archive unpacked.
Traceback (most recent call last):

File "", line 1, in
runfile('/home/janinanu/Desktop/Dialogue System/ubuntu-ranking-dataset-creator/src/create_ubuntu_dataset.py', wdir='/home/janinanu/Desktop/Dialogue System/ubuntu-ranking-dataset-creator/src')

File "/home/janinanu/anaconda3/lib/python3.5/site-packages/spyder/utils/site/sitecustomize.py", line 710, in runfile
execfile(filename, namespace)

File "/home/janinanu/anaconda3/lib/python3.5/site-packages/spyder/utils/site/sitecustomize.py", line 101, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "/home/janinanu/Desktop/Dialogue System/ubuntu-ranking-dataset-creator/src/create_ubuntu_dataset.py", line 407, in
args.func(args)

AttributeError: 'Namespace' object has no attribute 'func'

I cannot make any sense of it. Any suggestions how to solve it?