Invalid configuration

Hi

I am having problem with Home Assistant showing message that my config file is invalid.

Please can you have a look at my config file and tell me what I am doing wrong?

Many thanks.

homeassistant:

Name of the location where Home Assistant is running

name: Home

Location required to calculate the time the sun rises and sets

latitude: xx.472221
longitude: -xx.604328

Impacts weather/sunrise data (altitude above sea level in meters)

elevation: 14

metric for Metric, imperial for Imperial

unit_system: metric

Pick yours from here: List of tz database time zones - Wikipedia

time_zone: Europe/London

Enables the frontend

frontend:

http:

Discover some devices automatically

discovery:

Allows you to issue voice commands from the frontend in enabled browsers

conversation:

Enables support for tracking state changes over time.

history:

View all events in a logbook

logbook:

device_tracker:

  • platform: nmap_tracker
    host: 192.168.0.1/24

Check the spacing on ‘host’ for nmap_tracker. It should be aligned to the “p” in platform. Also, when posting code/yaml, please select the text and choose the “</>” brackets so we can see how it really looks.

device_tracker:
  - platform: nmap_tracker
    hosts: 192.168.1.1/24