Bluetooth notworking 2020 12.2

I updated to Home Assistant 2020.12.2

device_tracker:

  • platform: bluetooth_tracker

Gives me this error

Platform error device_tracker.bluetooth_tracker - cannot import name ‘YAML_DEVICES’ from ‘homeassistant.components.device_tracker’ (/usr/src/homeassistant/homeassistant/components/device_tracker/init.py)

Use to work be for update

How to fix Bluetooth not working
System Health

Version 2020.12.2
Installation Type Home Assistant OS
Development false
Supervisor true
Docker true
Virtual Environment false
Python Version 3.8.6
Operating System Family Linux
Operating System Version 5.4.79-v8
CPU Architecture aarch64

Do you know what your talking about ???