error message by validating config

[MobiD2017]

during the configuration validation i get the following error message:

Platform error fan.rest - No module named 'homeassistant.components.rest.fan'
Invalid config for [fan.template]: [sensors] is an invalid option for [fan.template]. Check: fan.template->sensors. (See ?, line ?).

Can you tel me what I can do?
My config is maybe ti simple:

fan:

• platform: philips_airpurifier_http
  host: 10.1.0.181
  name: Philips Air Purifier