Need help with nginx.conf (blank page after new install)

server {
    listen      xxx.xxx.xx.xx:80;
    server_name site.com www.site.com;
    root        /home/site/web/site.com/public_html;
    index       index.php index.html index.htm;
    access_log  /var/log/nginx/domains/site.com.log combined;
    access_log  /var/log/nginx/domains/site.com.bytes bytes;
    error_log   /var/log/nginx/domains/site.com.error.log error;

        gzip on; # set gzip
        gzip_disable "msie6";
        gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript;

    location / {

if ($host ~* ^site\.com$) { 
    rewrite ^(.*) http://www.site.com$1 permanent;
    break;
}

location / {
    index index.php index.html index.htm;
    try_files $uri $uri/ /index.php?$args;
}        

        location ~* ^.+\.(jpeg|jpg|png|gif|bmp|ico|svg|css|js)$ {
            expires     max;
        }

        location ~ [^/]\.php(/|$) {
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            if (!-f $document_root$fastcgi_script_name) {
                return  404;
            }

            fastcgi_pass    127.0.0.1:9002;
            fastcgi_index   index.php;
            include         /etc/nginx/fastcgi_params;
        }
    }

    error_page  403 /error/404.html;
    error_page  404 /error/404.html;
    error_page  500 502 503 504 /error/50x.html;
}
---