Django application 504 error after saving model

Question

I have a Django website running Django 1.8 with Python 3.4 and hosted on AWS via ElasticBeanstalk.

Recently, I\'ve been having some issues with the Django admin area and

Answer 1

It is probably due to this bug https://github.com/pyca/cryptography/issues/2299

How to fix discussed here https://github.com/pyca/cryptography/issues/2473

Which seems to say uninstall python Cryptography library and then pip install version 1.1 of it

Answer 2

This error showed up for me by django-ses calling for the rate limit through boto's make_request in the connections module. Reverting cryptography 1.5 to 1.1 fixed my errors.