If you not actively use Bluetooth you should turn it off. Enable the Bluetooth Icon in the menu bar too, so you can always see, if you have turned it off.
How to fix it
macOS 10.11 – 14
- Go To “System Preferences” > “Bluetooth”
- “Turn Bluetooth off”
If you not actively use Bluetooth you should turn it off. Enable the Bluetooth Icon in the menu bar too, so you can always see, if you have turned it off.