Deployment of Native File System API code on windows is not accessible over internet

[lavalmagan]

Chrome Version : 83.0.4103.106
URLs (if applicable) : http://ec2-18-223-133-52.us-east-2.compute.amazonaws.com:8080/

What steps will reproduce the problem?
(1) Download the code from https://github.com/GoogleChromeLabs/text-editor/ on the windows machine. I have used AWS machine to make it accessible over the internet.
(2) Run it on local after running gulp serve command on node.js - working fine
(3) Hit the :port url from some other machine. The page is not accessible.
http://ec2-18-223-133-52.us-east-2.compute.amazonaws.com:8080/

What is the expected result?
This gulp app website should be accessible over the internet as I have created another hello world app on Node.js which is working over the internet on another machine.

Everything is the same, I have deployed on the same machine, ports are open etc. Simple Node js website is accessible over the internet but not the code of text editor.

See this is a simple spring app also working on the same machine
http://ec2-18-223-133-52.us-east-2.compute.amazonaws.com:5000/StellarUILoginWebService-1.0-SNAPSHOT/