Resolution ERROR: Nginx: [Emerg] Unknown log format "main" in

The following error occurred with the reboot Nginx:

Nginx: [Emerg] Unknown log format "Proxy_log" in/usr/local/macports/etc/nginx/nginx.conf:147

Solution:

Open nginx.conf, "main" error is due to the loss of the Log_format option, before shielding him off, modify the problem solved.

User					             nginx Nginx;
PID					             /var/log/nginx/nginx.pid;
Worker_processes		    8;
Worker_rlimit_nofile		    1024;
Events {
	worker_connections    2048;
	Use Epoll;
}
http {
	include				   mime.types;
	Default_type		   Application/octet-stream;

        Log_format		main	' $remote _addr-$remote _user [$time _local] $request '
					"$status" $body _bytes_sent "$ Http_referer ""
					"$http _user_agent" "$http _x_forwarded_for" "$gzip _ratio"; access_log off			;
	Error_log			   /var/log/nginx/error.log error;
Include				  localhost.conf;
}