Calibre-web on Amazon ec2 <script> not working

[srini8080]

Describe the bug/problem

I have a epub that has a .js file in it that puts a popup. I have calibre web running in ec2 on Amazon. I opened the epub in the viewer. The JS is not working.

To Reproduce

any <script> running in any html file

<script>alert('Test');</script>

Expected behavior

The epub is working locally when I run calirbe web in local LAN. Then the js file is putting the popup.

Screenshots

Environment (please complete the following information):

Centos 8, AWS, Calibre-web 0.6.12, browser is firefox 115.10.0esr

Not sure it is CORS issue and if yes, then do I need to fix epub.js or the epub