Problem with Hass.io

I put this in configuration.yaml

tuya:
  username: myphonenumber
  password: mypassword
  country_code: mycountrycode
  platform: smart_life
  light:
    platform: tuya
    name: Scrivania
    host: 192.168.1.9
    local_key: xxxxx
    device_id: xxxxxxxxxxxxxx

And when i hit check config it says this

Invalid config for [tuya]: required key not provided @ data['device_id']. Got None required key not provided @ data['host']. Got None required key not provided @ data['local_key']. Got None required key not provided @ data['name']. Got None. (See /config/configuration.yaml, line 31). Please check the docs at https://home-assistant.io/components/tuya/