Visiting WordPress Website Home Page Doesnt Load, Instead Downloads A File

The home page does not load but asks to download a .dms file. I do not face this issue when I login as an admin and visit the home page but in an incognito window, it asks me to download a file instead of showing up the home page. I can access other pages of the website such as

I tried the following but none of these worked:

1. Update .htaccess file with following lines of code:
AddType text/html .html
AddHandler application/x-httpd-php .php

2. Deactivated ALL plugins, yet the issue persisted.

3. Deactivated cache plugins and paused cloudflare on my website.

I am using CyberPanel/OpenLiteSpeed server on a GCP cloud VM.

Can you let me know how to resolve this issues? Thanks for your time and awaiting a helpful response from you. Thanks again!

The page I need help with: [log in to see the link]

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