server {    listen       80;    server_name  domain.com;    send_timeout                6000;    charset utf-8;       location / {        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        proxy_set_header Host $http_host;        proxy_set_header X-NginX-Proxy true;        proxy_pass_request_headers on;        proxy_pass http://127.0.0.1:3000;    }