Help needed for gunicorn with askbot

askbot
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i have installed the askbot successfully using Ubuntu 16.04 + nginx +postgresql + gunicorn

but i have failed in this steps binding the gunicorn

please help me

i have rename the django.wsgi to wsgi.py

after that i have run

gunicorn --bind 139.59.31.191:8000 wsgi:application

It gives me given error in sample output

[2016-07-26 05:10:06 +0000] [15165] [INFO] Starting gunicorn 19.6.0
[2016-07-26 05:10:06 +0000] [15165] [INFO] Listening at: 139.59.31.191:8000 (15165)
[2016-07-26 05:10:06 +0000] [15165] [INFO] Using worker: sync
[2016-07-26 05:10:06 +0000] [15170] [INFO] Booting worker with pid: 15170
WARNING!!! You are using a 'locmem' (local memory) caching backend,
which is OK for a low volume site running on a single-process server.
For a multi-process configuration it is neccessary to have a production
cache system, such as redis or memcached.

With local memory caching and multi-process setup you might intermittently
see outdated content on your site.

handling WSGI exception
Failed to find application: 'wsgi'
[2016-07-26 04:10:06 +0000] [15170] [INFO] Worker exiting (pid: 15170)
[2016-07-26 05:10:06 +0000] [15165] [INFO] Shutting down: Master
[2016-07-26 05:10:06 +0000] [15165] [INFO] Reason: App failed to load.

thanks...