Pdf.js Sample web app not working

[chetanrang]

I'm following below WIKI to setup sample web app downloaded from https://github.com/mozilla/pdf.js/releases/download/v4.3.136/pdfjs-4.3.136-dist.zip

Setup WIKI
https://github.com/mozilla/pdf.js/wiki/Setup-PDF.js-in-a-website

Ran below commands
npm install pdfjs-dist --save
npm install pdfjs-dist --save-dev

And opening below file in browser,
C:\Users\F7D3T95\Documents\Architect\pdfjs-4.3.136-dist\web\viewer.html. But it shows blank viewer. Pdf is not loaded\showing.

Let us know how to run this sample web app in https://github.com/mozilla/pdf.js/releases/download/v4.3.136/pdfjs-4.3.136-dist.zip