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运行 flutter doctor 报错：
[!] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[√] Chrome - develop for the web
[X] Visual Studio - develop Windows apps
X Visual Studio not installed; this is necessary to develop Windows apps.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2022.3)
[√] IntelliJ IDEA Ultimate Edition (version 2021.1)
[√] Connected device (3 available)
[!] Network resources
X A network error occurred while checking "https://maven.google.com/": 信号灯超时工夫已到
X A network error occurred while checking "https://github.com/": 信号灯超时工夫已到 解决办法：
1、运行 flutter doctor --android-licenses 命令
2、始终输出 Y 就能够了 后果：解决了方才报没有受权的问题：
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