Strapi on Plesk Windows, port redirect error - strapi

Question

I want to set up Strapi (v4) on a Plesk (Windows) / nodeJS (16.16) / MySQL (MariaDb 10.6.9) environment but I get the error: options.port should be >= 0 and < 65536. Received NaN.
Strapi Version: 4
Operating System: Windows 2022 Datacenter + Plesk Obsidian
Database: MariaDB 10.6.9
Node Version: 16.16
NPM Version: 8.19.2
Yarn Version: N/A
I did the installation like this :
$ npx create-strapi-app plesk-strapi --no-run
$ # custom Install
$ # wait for installation process to finish
$ cd strapi-demo.xyz.com
$ npm run build
I configure the boot of the application at the root of the project ‘/app.js’
const strapi = require('#strapi/strapi'); //require('strapi');
strapi().start();
And file ‘config/server.js’ :
module.exports = ({ env }) => ({
host: env('HOST', process.env.HOST || '127.0.0.1'),
port: env.int('PORT', parseInt(process.env.PORT) || 80),
app: {
keys: env.array('APP_KEYS'),
},
});
And file ‘/.env’ :
HOST=127.0.0.1
PORT=80
APP_KEYS= mySecretKey1, mySecretKey2, mySecretKey3, mySecretKey4
API_TOKEN_SALT= mySecretSaltKey
ADMIN_JWT_SECRET=mySecretKey
JWT_SECRET=mySecretKey
# `sqlite` or `mysql`
DATABASE_CONNECTION_NAME=mysql
DATABASE_HOST=localhost
DATABASE_PORT=3306
DATABASE_NAME=myDbName
DATABASE_USERNAME=MyDbUsername
DATABASE_PASSWORD=MyDbPassword
Plesk nodeJS config :
return Error :
[2022-10-20 09:33:55.897] [34mdebug[39m: ⛔️ Server wasn't able to start properly.
[2022-10-20 09:33:55.904] [31merror[39m: options.port should be >= 0 and < 65536. Received NaN.
RangeError [ERR_SOCKET_BAD_PORT]: options.port should be >= 0 and < 65536. Received NaN.
at new NodeError (node:internal/errors:372:5)
at validatePort (node:internal/validators:217:11)
at Server.listen (node:net:1500:5)
at Object.listen (E:\plesk\vhost\xyz.com\strapi-demo.xyz.com\node_modules\#strapi\strapi\lib\services\server\index.js:122:25)
at E:\plesk\vhost\xyz.com\strapi-demo.xyz.com\node_modules\#strapi\strapi\lib\Strapi.js:302:21
at new Promise (<anonymous>)
at Strapi.listen (E:\plesk\vhost\xyz.com\strapi-demo.xyz.com\node_modules\#strapi\strapi\lib\Strapi.js:281:12)
at Strapi.start (E:\plesk\vhost\xyz.com\strapi-demo.xyz.com\node_modules\#strapi\strapi\lib\Strapi.js:215:18)
at processTicksAndRejections (node:internal/process/task_queues:96:5)