I'm not sure if I did this correctly but I enabled logging in nginx by removing the # from the line in the nginx.conf file
#user nobody;
worker_processes 1;
error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
2016/04/02 18:29:39 [error] 70146#0: *1 "/usr/local/www/nzedb/www/index.html" is not found (2: No such file or directory), client: 192.168.1.6, server: , request: "GET / HTTP/1.1", host: "192.168.1.155"
2016/04/02 21:37:01 [emerg] 79385#0: open() "/usr/local/etc/nginx/logs/error.log" failed (2: No such file or directory)
2016/04/02 21:37:07 [emerg] 79394#0: open() "/usr/local/etc/nginx/logs/error.log" failed (2: No such file or directory)
2016/04/02 21:37:28 [error] 78606#0: *2 "/usr/local/www/nzedb/www/index.html" is not found (2: No such file or directory), client: 192.168.1.6, server: , request: "GET / HTTP/1.1", host: "192.168.1.155"
#user nobody;
worker_processes 1;
error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
2016/04/02 18:29:39 [error] 70146#0: *1 "/usr/local/www/nzedb/www/index.html" is not found (2: No such file or directory), client: 192.168.1.6, server: , request: "GET / HTTP/1.1", host: "192.168.1.155"
2016/04/02 21:37:01 [emerg] 79385#0: open() "/usr/local/etc/nginx/logs/error.log" failed (2: No such file or directory)
2016/04/02 21:37:07 [emerg] 79394#0: open() "/usr/local/etc/nginx/logs/error.log" failed (2: No such file or directory)
2016/04/02 21:37:28 [error] 78606#0: *2 "/usr/local/www/nzedb/www/index.html" is not found (2: No such file or directory), client: 192.168.1.6, server: , request: "GET / HTTP/1.1", host: "192.168.1.155"