当我运行时flutter doctor，我注意到许可证状态未知。
[\xe2\x88\x9a] Flutter (Channel stable, v1.0.0, on Microsoft Windows [Version 10.0.17763.253], locale en-US)\n[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)\n X Android license status unknown.\n[\xe2\x88\x9a] Android Studio (version 3.3)\n[\xe2\x88\x9a] IntelliJ IDEA Ultimate Edition (version 2018.3)\n[!] VS Code (version 1.30.2)\n[!] Connected device\n ! No devices available\n\n! Doctor found issues in 3 categories.\n我发现为了解析许可证，我需要运行此命令flutter doctor --android-licenses。当我运行时出现以下错误：
The system cannot find the path specified.\nThe system cannot find the path specified.\nThe system cannot …