Using webview_flutter: ^0.3.2+1

I get ERR_CLEARTEXT_NOT_PERMITTED for Android and blank page for iOS when I use
http:// urls. https:// urls seems to work.
The very same http:// urls works fine in Chrome.

I recall I had the same problem in native Android as well.
Is possible to tell webview "please use http://. I will take the risk"

Thanks in advanced