starting version 3.2.4
Testing configuration at /config
ERROR:homeassistant.config:Invalid config for [device_tracker]: required key not provided @ data['platform']. Got None. (See /config/configuration.yaml, line 79). Please check the docs at https://home-assistant.io/components/device_tracker/
Failed config
  device_tracker:
    device_tracker: [source /config/device_trackers.yaml:1]
      - platform: luci
        host: 149.194.61.1
        password: kUB!KpL17081993!0_01
        username: root

Successful config (partial)
  device_tracker: