Transmission Component Error during setup

Anyone has the transmission component working?
When I connect manually with webbrowser there’s no problem.

2019-09-25 18:34:34 ERROR (MainThread) [homeassistant.setup] Error during setup of component transmission
Traceback (most recent call last):
  File "/home/homeassistant/lib/python3.6/site-packages/homeassistant/", line 172, in _async_setup_component
    component.setup, hass, processed_config  # type: ignore
  File "/usr/lib/python3.6/concurrent/futures/", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/homeassistant/lib/python3.6/site-packages/homeassistant/components/transmission/", line 74, in setup
    host = config[DOMAIN][CONF_HOST]
KeyError: 'transmission'
2019-09-25 18:34:34 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform transmission.sensor: Unable to set up component.