nginx + uwsgi: — unavailable modifier requested: 0 --
Ubuntu 12.04, nginx 1.2.0, uwsgi 1.0.3. I start uwsgi with the following command: uwsgi -s 127.0.0.1:9010 -M -t 30 -A 4 -p 4 -d /var/log/uwsgi.log On each request nginx replies with 502 and uwsgi writes to log the following line: -- unavailable modifier requested: 0 -- Original answer For Python 2 on Ubuntu 11.10, using upstart , install the python plugin for uWSGI with apt-get install uwsgi-plugin-python and if you're using an ini file to configure your uWSGI app, then add plugins = python to the [uwsgi] section and it should solve this problem. Edit: Updated for Python 3 and Ubuntu 17.10 For