OnPop() loader displays infinitely

My Application has heavy use of WebViews. That's why I am navigating between webviews using Navigator.push(context, route); and Navigator.of(context).pop();

However, when I pop one webview and come back to the previous one, I see the circularprogressindicator() and the webpage doesn't load again.

any suggestions as to why this could be happening and any solutions for the same? Really urgent. Thanks.