Delugue Web Dameon get disconnected after 30 to 60 seconds of startup

I am unfamiliar with Linux. Occationally I use so still considered new

Trying to learn Linux. Applogies if I ask some stupid questions..

I have instealled Linux in a ubuntu seedbox.
For installation I followed this instruction

apt-get update
apt-get upgrade
apt-get install deluged
apt-get install deluge-web
apt-get install nginx

I have created a shell script and execute manually every time I boot.
#!/bin/sh
echo "Auto boot in progress..."
echo "Apache2 stopped"
sudo systemctl stop apache2
echo "Starting nginx.."
sudo service nginx start
echo "Staring deluged ..."
deluged
echo "Starting deluge-web..."
deluge-web --fork

After that I go to url as follows
http://168.ZZZ.YY.XX:8112/
(ZZZ.YY.XX as IP numbers.)

Some times it works but most of the time after a 30 seconds or a minute the Dameon get disconnetc and unable to start again.

My version as follows.

root@linbox:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
root@linbox:~# deluged -v
deluged: 1.3.15
libtorrent: 1.1.5.0
root@linbox:~# deluge-web -v
deluge-web: 1.3.15
libtorrent: 1.1.5.0
root@linbox:~#

How do I debug and find the problem?

Thank you and have a blessed day.