Could not automatically detect an ADB binary – Android Studio

From my experience this is because the AVD can’t detect your ADB binary. When you launch the AVD if you go into settings, it’s the ‘…’ symbol on the toolbar of the virtual machine, then go to the ‘Settings’ section there should be an option called ‘Use detected ADB location’ switch this off then select the location of your adb binary. In Linux you can do this by typing the command:

which adb

Select the location shown in the settings. Once you’ve done that the error should stop appearing.