flutter paypal via webview
I am trying to integrate paypal payment for my flutter app via a webview. return new MaterialApp( routes: { "/": (_) => new WebviewScaffold( url: "https://www.paypal.com/cgi-bin/webscr? business=xxxx.com&cmd=_xclick&item_name=Hot+Sauce-12oz.+Bottle&amount=5.95¤cy_code=USD", appBar: new AppBar( title: new Text( "Payment", ), ), ) }, ); when i run the page, the app closes unexpectedly with the error message Unsupported value: <FlutterError: 0x1c422d200> of type FlutterError Lost connection to device. This is my flutter doctor. Running flutter doctor... Doctor summary (to see all details, run flutter doctor -v): [✓] Flutter (Channel beta, v0.5.1, on Mac OS X 10.13.1 17B1003, locale en-HK) [✓] Android toolchain - develop for Android devices (Android SDK 26.0.2) [✓] iOS toolchain - develop for iOS devices (Xcode 9.2) [✓] Android Studio (version 3.1) [✓] Connected devices (3 available) You forget the ini...