bash
flutter pub cache clean

flutter doctor 出现：

bash
[!] Network resources
    X A network error occurred while checking "https://github.com/": 信号灯超时时间已到

flutter打包时报错：

bash
Execution failed for task ':xxx:verifyReleaseResources'.
> A failure occurred while executing com.android.build.gradle.tasks.VerifyLibraryResourcesTask$Action
   > Android resource linking failed
     ERROR: D:\Project\apprheofit-china\app_rheofit\build\cloudbase_ce\intermediates\merged_res\release\mergeReleaseResources\values\values.xml:194: AAPT: error: resource android:attr/lStar not found.

运行flutter pub get时提示：

bash
Building with plugins requires symlink support.

Please enable Developer Mode in your system settings. Run
  start ms-settings:developers
to open settings.
exit code 1

运行flutter pub get报错

Got socket error trying to find package flutter_facebook_auth at https://pub.dev.