I had to change this slightly:
- platform: template
sensors:
up_time:
friendly_name: Up Time
value_template: >
{{ ((now() - strptime(states('sensor.uptime'), '%Y-%m-%dT%H:%M:%S%f%z')) | string)[:-10] }}
I had to change this slightly:
- platform: template
sensors:
up_time:
friendly_name: Up Time
value_template: >
{{ ((now() - strptime(states('sensor.uptime'), '%Y-%m-%dT%H:%M:%S%f%z')) | string)[:-10] }}