How do I remove this 'zombie' emulator listed by ADB, but not by Android Studio?

When I run adb devices, it shows an offline emulator: List of devices attached emulator-5554 device emulator-5562 offline However, when I run Device Manager in Android Studio, it's not listed. When I try to kill the emulator with adb -s emulator-5562 emu kill, I get connection refused. When I try to get info about it with adb -s emulator-5562 shell getprop, I get "device offline". My $HOME/.android/avd folder is empty. I can't find any sign of this emulator in my file system. I'm on a Mac. How do I get rid of this thing? I have a React Native project that I can't run on Android, because the expo command keeps trying to run on this mysterious offline emulator, so I'm trying to attack what I think is the root issue.