#157

Could you please describe proper steps to reproduce this error.?

Hi @Sandipkakadiya

` var pruebaList = [
"https://images.freeimages.com/images/large-previews/7c7/tulips-1531279.jpg",
"https://images.freeimages.com/images/large-previews/7c7/tulips-1531279.jpg",
"https://images.freeimages.com/images/large-previews/7c7/tulips-1531279.jpg"
];
return GFCarousel(
viewportFraction: 1.00,
autoPlay: true,
pagination: false,
height: height,
items: pruebaList.map(
(url) {
return Container(
margin: EdgeInsets.all(8.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(5.0)),
child: Image.network(
url,
fit: BoxFit.cover,
width: (MediaQuery.of(context).size.width).toDouble(),
)

            ),
          );
        },
      ).toList(),
      onPageChanged: (index) {
        // setState(() {
        //   // index;
        // });
      },
    );`

flutter doctor -v
[✓] Flutter (Channel dev, 1.23.0-7.0.pre, on Mac OS X 10.15.6 19G2021 x86_64, locale en-US)
• Flutter version 1.23.0-7.0.pre at /usr/local/Caskroom/flutter/latest/flutter
• Framework revision db6e2d8aa5 (7 days ago), 2020-09-25 06:47:03 -0400
• Engine revision 3a73d073c8
• Dart version 2.11.0 (build 2.11.0-161.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.0-rc2)
• Android SDK at /Users/alonhorovitz/Library/Android/sdk
• Platform android-29, build-tools 29.0.0-rc2
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 12.0.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.0.1, Build version 12A7300
✗ Xcode requires additional components to be installed in order to run.
Launch Xcode and install additional required components when prompted or run:
sudo xcodebuild -runFirstLaunch
• CocoaPods version 1.9.3

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 48.1.2
• Dart plugin version 193.7361
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.49.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.15.0

[✓] Connected device (2 available)
• Web Server (web) • web-server • web-javascript • Flutter Tools
• Chrome (web) • chrome • web-javascript • Google Chrome 85.0.4183.121

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
[ ] The following TypeErrorImpl was thrown building AnimatedBuilder(animation: PageController#83414(one
[ ] client, offset 11130000.0), dirty, state: _AnimatedState#cfa89):
[ +1 ms] Unexpected null value.
[ +2 ms] The relevant error-causing widget was:
[ ] AnimatedBuilder
[ ] file:///usr/local/Caskroom/flutter/latest/flutter/.pub-cache/hosted/pub.dartlang.org/getwidget-1.2.2/lib/components/carousel/gf_carousel.dart:260:22

Flutter Web

#196 Maybe is the same