uwsgi + apache - Invalid command 'uWSGISocket', perhaps misspelled or defined by a module not included in the server configuration

I have this error:

Invalid command 'uWSGISocket', perhaps misspelled or defined by a
module not included in the server configuration

    ServerAdmin your@email.com
    ServerName voorloopnul.com
    ServerAlias www.voorloopnul.com

    DocumentRoot /var/www

    

        Options FollowSymLinks Indexes
        AllowOverride None
    

    
        Options Indexes FollowSymLinks MultiViews
        AllowOverride None
        Order allow,deny
        allow from all
    


    
        Options FollowSymLinks Indexes
        SetHandler uwsgi-handler
        uWSGISocket 127.0.0.1:3031
    

   
        SetHandler none
   


    Alias /static //srv/apps/voorloopnul/voorloopnul/static/

    ErrorLog ${APACHE_LOG_DIR}/error.log
    LogLevel warn
    CustomLog ${APACHE_LOG_DIR}/voorloopnul.com.access.log combined

Full tutorial: http://voorloopnul.com/blog/setting-up-django-with-apache-and-uwsgi-ubuntu-12-10/

Answer

It seems that you forgot to enable module libapache2-mod-uwsgi with a2enmod