我从Github克隆了一个flutter项目（项目链接：https://github.com/abuanwar072/Covid-19-Flutter-UI.git），我没有改变代码中的任何东西。我已经克隆了它在VS代码，但当我试图运行它在我的Android模拟器，我运行到一个错误。
日志：

[38;5;248mLaunching lib\main.dart on Android SDK built for x86 in debug mode...[39;49m
 lib\main.dart

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':app:processDebugResources'.
> File 'C:\Users\RIJAK\AppData\Local\Android\sdk\platforms\android-28\android.jar' specified for property 'androidJar' does not exist.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 13s
Exception: Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

我已经试过从Android Studio更新我的Android SDK并运行Flutter Doctor（它显示了一些关于许可证的东西，所以我通过对它显示的所有许可证说是来修复它）。它仍然在产生上述信息。我不确定我是否正确地完成了SDK更新部分，但请帮助了解如何正确地完成。