title: Expo with Android Studio Emulator error: "Error running adb: This computer is not authorized to debug the device"
body: <p>I am trying to connect an Android Studio Emulator to my expo application, but I get this error message:</p>
  
  <blockquote>
    <p>Couldn't start project on Android: Error running adb: This computer is
    not authorized to debug the device. Please follow the instructions
    here to enable USB debugging:
    <a href="https://developer.android.com/studio/run/device.html#developer-device-options" rel="noreferrer">https://developer.android.com/studio/run/device.html#developer-device-options</a>.
    If you are using Genymotion go to Settings -> ADB, select "Use custom
    Android SDK tools", and point it at your Android SDK directory.</p>
  </blockquote>
  
  <p>Does anyone know what to do with this? </p>
  
  <p>Thanks!</p>