exception at requirements.txt

I am using python2

Steps I've followed are:

pip install cognitive_face
python setup.py install
getting a valid subscription key
Copy cognitive_face/tests/config.sample.py into cognitive_face/tests/config.py.
Change the KEY and BASE_URL parameters to your own subscription's API key and endpoint.
Run the following:
python setup.py test
pip install -r requirements.txt

At requirements.txt an exception occurs at line 6 completed 21%

Exception:
Traceback (most recent call last):
File "/usr/share/python-wheels/urllib3-1.15.1-py2.py3-none-any.whl/urllib3/response.py", line 228, in _error_catcher
yield

[kartikvega]

DId you try to install the requriements manually like pip install pillow and see which of the packages is throwing the error and see if its compatible with your version of python?

[lebronJ]

Any further question/request on this? If not, I will close this issue tomorrow.