<Android Studio cannot upload to AVD: com.android....

# stackoverflow

[user]

Android Studio cannot upload to AVD: com.android.ddmlib.AdbCommandRejectedException: device unauthorized
I just installed Android Studio last week with intentions to create an app. However, I seem to be running into an issue when trying to upload Hello World code to a newly created API 28 AVD. This appears in the Run tab when trying to run the app:

$ adb push C:\Users\neilb\Documents\GitHub\Teender\teender-android\app\build\outputs\apk\debug\app-debug.apk /data/local/tmp/com.teender.teender
com.android.ddmlib.AdbCommandRejectedException: device unauthorized.
This adb server's $ADB_VENDOR_KEYS...