I can't build and run

[uthens]

"var ioRequest = (await _inner.openUrl(request.method, request.url))"

Other information:
[✓] Flutter (Channel dev, 1.25.0-4.0.pre, on macOS 11.1 20C5048k darwin-x64, locale en-US)
• Flutter version 1.25.0-4.0.pre at /Users/uthensorsiang/development/flutter
• Framework revision a7f5fd5360 (2 weeks ago), 2020-11-30 13:14:13 +0100
• Engine revision 20caf54969
• Dart version 2.12.0 (build 2.12.0-76.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
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• Platform android-29, build-tools 29.0.2
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• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
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• Xcode 12.2, Build version 12B45b
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• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)

[✓] Android Studio (version 4.1)
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• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[✓] VS Code (version 1.52.0)
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[✓] Connected device (4 available)
• iPad Air (4th generation) (mobile) • 51069E2A-1F88-4D9A-B199-A3E161F37873 • ios • com.apple.CoreSimulator.SimRuntime.iOS-14-2 (simulator)
• macOS (desktop) • macos • darwin-x64 • macOS 11.1 20C5048k darwin-x64
• Web Server (web) • web-server • web-javascript • Flutter Tools
• Chrome (web) • chrome • web-javascript • Google Chrome 86.0.4240.111