Pdf file in iframe not loading

[Netxx]

Hello,
i have implemented pdf reader inside of iframe. Everythings work fine in browser and my test android WebView app.
When i use ASV for app, iframe is empty and pdf file is not showing.
Some idea how to get it to work?

Thank you

[mgks]

Have to look into it in detail.

Do you have any logs? And is there an iframe in your web page that loads pdf or you're trying to load pdf directly into the webview?