Monit appears to be working on command line but get 404 'There is no service by that name' in web interface

I had this error when I misconfigured my Nginx. After reading the wiki, I resolved monit 404 errors. Here's my /etc/nginx/conf.d/monit.conf:

server {
    listen   80;
    server_name  my.server.name;

    location /monit/ {
            allow 127.0.0.1;
            allow 192.0.0.0/8;
            deny all;

            proxy_pass http://127.0.0.1:2812;
            proxy_set_header Host $host;
            rewrite ^/monit/(.*) /$1 break;
            proxy_ignore_client_abort on;
    }
}