Anyone can help me to resolve the issue?
What IS the issue? "Not working" covers a lot of possibilities.
Sorry, somehow I thought the title tells eough informaiton about the issue.
The demo displays "File Preview Error" with the PDF URL attached above. I see a warning message related to CORS. Not sure how I could fix this.
Solving this is outside my expertise, but to help you get good answers I suggest you share the actual messages you get. They will be full of important detail. (Redact any personal info tho'!)
I appreciated your time and comments.