The picture says it all.
I have tried opening the emulator in the avd manager and access it through the run menu without success.
Background info: - I recently upgraded to MacOS High Sierra. - I have updated Android Studio to 3.0 Beta 7 trying to solve the issue. - The commands "emulator" and "avd" are unrecognized commands now. - I am also using react-native, accessing the emulator from react-native run-android and android studio too, doesn't work anymore.