I am facing a problem which my Android Studio is unable to establish a connection to adb. The problem seems occur after I updated my Android Studio from 3.1.1 to 3.1.2 on my Mac (macOS High Sierra 10.13.1).
I tried to updated the Android Studio to 3.1.3, Android SDK Platform-Tools to 28.0.0, macOS to High Sierra 10.13.5, but the problem still exists. I also filed a bug on Android.com about 2 months ago, but I got no response.
Anyone could recommend how to fix?