Ubuntu 18.04 + Nginx + Passenger : not serving any pages

Hi,

i’m trying to set up a RoR + Nginx/Passenger environment, using this tutorial : https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-18-04

However, i’m facing this following issue : despite the fact that my rails server is running, i can not see any page if i go to http://my_IP_address:3000.

As mentionned in the tutorial, i’ve modified my Nginx configuration file as followed :

server {
  listen 127.0.0.1:3000 default_server;
  #server_name example.com;
  passenger_enabled on;
  passenger_app_env development;
  root /home/rails/testapp/public;
}

This is what i get when i do a :

root@ubuntu-s-1vcpu-1gb-ams3-01:/home/rails/testapp# netstat -plant

–>

Active Internet connections (servers and established)

Proto
Recv-Q
Send-Q
Local Address
Foreign Address
State
PID/Program name

tcp
0
0 0.0.0.0:80
0.0.0.0:*
LISTEN
12469/nginx: master

tcp
0
0
127.0.0.53:53
0.0.0.0:*
LISTEN
26794/systemd-resol

tcp
0
0
0.0.0.0:22
0.0.0.0:*
LISTEN
953/sshd

tcp
0
0
127.0.0.1:3000
0.0.0.0:*
LISTEN
30875/puma 4.3.1 (t

tcp
0
0
178.62.224.137:22
86.208.49.163:53641
ESTABLISHED 30568/sshd: rails [

tcp
0
464
178.62.224.137:22
86.208.49.163:53226
ESTABLISHED 27641/sshd: root@pt

tcp
0
0
178.62.224.137:22
86.208.49.163:52900
ESTABLISHED 22558/sshd: root@no

tcp6
0
0
:::22
:::*
LISTEN
953/sshd

tcp6
0
0
::1:3000
:::*
LISTEN
30875/puma 4.3.1 (t

Is there somebody who could help me please ?

Thank you very much Geoffrey