Still seeing the Welcome to nginx! screen after nginx configuration

server {
    listen 80;
    listen [::]:80 ipv6only=on;
    
    server_name IP;
    passenger_enabled on;
    rails_env    production;
    root         /home/poladmin/poetry-out-loud-v2/current/public/;
    
    # redirect server error pages to the static page /50x.html
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   html;
    }
}