(작성 중) expo + android 연동 에러

Couldn't start project on Android: Error running adb: No Android connected device found, and no emulators could be started automatically. Please connect a device or create an emulator (https://docs.expo.io/workflow/android-studio-emulator). Then follow the instructions here to enable USB debugging: https://developer.android.com/studio/run/device.html#developer-device-options. If you are using Genymotion go to Settings -> ADB, select "Use custom Android SDK tools", and point it at your Android SDK directory.