2017-12-11 21:50:20 ERROR (MainThread) [homeassistant.config] Invalid config for [mysensors]: not a valid value for dictionary value @ data['mysensors']['gateways'][0]['device']. Got '/dev/ttyUSB0'. (See /config/configuration.yaml, line 122). Please check the docs at https://home-assistant.io/components/mysensors/

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Failed config
  mysensors:
    gateways: [source /config/configuration.yaml:123]
      - baud_rate: 38400
        device: /dev/ttyUSB0
        persistence_file: /mysensors4.json
    optimistic: False
    persistence: True
    retain: True
    version: 2.0
  General Errors:
    - Setup failed for mysensors: Invalid config.
Successful config (partial)