I am getting the error from my automation :
“Error executing script. Unexpected error for call_service at pos 1: Error rendering data template: UndefinedError: ‘trigger’ is undefine”
From the documentation I get the understanding that triggering using attribute behaves like triggering using state. Where am I going wrong, when I want the automation triggering when attribute latest_release_tag changes?
From the GUI -YAML editor:
alias: OpenTX RC Frimware Update MSG
description: OpenTX and Multiprotocol update Message
trigger:
- platform: state
entity_id: sensor.github_opentx
attribute: latest_release_tag
condition: []
action:
- service: notify.me
data:
title: HA - Information
message: >-
"{{trigger.from_state.attributes.friendly_name}}:
{{trigger.from_state.attributes.latest_release_tag}}->{{trigger.to_state.attributes.latest_release_tag}}"
mode: single