Where can I find the error logs of nginx, using fastcgi and django

i’m using django with fastcgi + nginx.I want to know were the logs (error) are stored in this case

My ngninx log is located here:

tail -f /usr/local/var/log/nginx/error.log

You can also check your nginx.conf to see if you have any directives dumping to custom log

error_log /usr/local/var/log/nginx/error.log;
error_log /usr/local/var/log/nginx/error.log notice;
error_log /usr/local/var/log/nginx/error.log info;