Missing Android platform(s) detected: 'android-27'

Question

I update my android studio to 3.1.3 but I cannot use platform 27 now when I click "install platform and sync project" it pop up a download window and then disappear. But the error still exist. SDK Platforms is following:

expand SDK:

Answer 1

For anyone get this issue, you should uninstall Android SDK 27 then re-install it from SDK download manager.