问题：Android Studio 4.0.1版本，添加Android 11模拟器（API 30）后，启动失败，报错：AM Emulator: emulator: ERROR: Can't find 'Linux version ' string in kernel image file: /Users/xxx/Library/Android/sdk/system-images/android-30/google_apis_playstore/x86//kernel-ranchu-64
解决方案：更新Android SDK->SDK Tools中Android Emulator版本到30.