How can i save PDF file in device storage, downloaded from webview in expo

I am trying to download pdf file from webview in react native (expo) but it is giving an error that says

Can’t open Url blob:https://domain/some-id

When i tried the same website in chrome and other browsers it was working i was able to download pdf files there, but in expo webview when i try to download pdf file it is giving an error which i mentioned above.