Switch Template error after recent core update

Configuration
1

I updated my HAOS to the most recent core 2024.10.2. and now a working switch template is giving me all kinds of errors and I can’t seem to figure out why.

Logger: homeassistant.config
Source: config.py:1300
First occurred: 9:01:14 PM (1 occurrences)
Last logged: 9:01:14 PM

Invalid config for 'switch' from integration 'template' at configuration.yaml, 
line 39: expected dictionary for dictionary value 'switches->value_template', got "{{ is_state('switch.source', 'on') }}", 
please check the docs at https://www.home-assistant.io/integrations/template Invalid config for 'switch' from integration 'template' at configuration.yaml, line 40: expected dictionary for dictionary value 'switches->friendly_name', got 'relax time'
, please check the docs at https://www.home-assistant.io/integrations/template 
Invalid config for 'switch' from integration 'template' at configuration.yaml, line 41: required key 'turn_off' not provided, please check the docs at https://www.home-
assistant.io/integrations/template Invalid config for 'switch' from integration 'template' at configuration.yaml, line 41: required key 'turn_on' not provided, please 
check the docs at https://www.home-assistant.io/integrations/template Invalid config for 'switch' from integration 'template' at configuration.yaml, line 43: 'target' is an 
invalid option for 'template.switch', check: switches->turn_on->target, please check the docs at https://www.home-assistant.io/integrations/template Invalid config for 
'switch' from integration 'template' at configuration.yaml, line 51: 'action' is an invalid option for 'template.switch', check: switches->turn_on->action, please check 
the docs at https://www.home-assistant.io/integrations/template Invalid config for 'switch' from integration 'template' at configuration.yaml, line 54: required key 
'turn_off' not provided, please check the docs at https://www.home-assistant.io/integrations/template Invalid config for 'switch' from integration 
'template' at configuration.yaml, line 54: required key 'turn_on' not provided, please check the docs at https://www.home-assistant.io/integrations/template Invalid config 
for 'switch' from integration 'template' at configuration.yaml, line 56: 'target' is an invalid option for 'template.switch', check: switches->turn_off->target, please check 
the docs at https://www.home-assistant.io/integrations/template Invalid config for 'switch' from integration 'template' at configuration.yaml, line 58: 'action' is an 
invalid option for 'template.switch', check: switches->turn_off->action, please check the docs at https://www.home-assistant.io/integrations/templatetype or paste code 
here

Here is my template when it worked.

switch:
  - platform: template
    switches:
        copy:
        value_template: "{{ is_state('switch.source', 'on') }}"
        friendly_name: "relax time"
        turn_on:
          action: switch.turn_on
          target:
            entity_id: switch.hallway
          action: switch.turn_off
          target:
            entity_id: switch.kitchen
          action: light.turn_on
          target:
            entity_id: light.master_bedroom_light_group
          action: switch.turn_on
          target:
            entity_id: switch.tv_josh_switch
        turn_off:
          action: switch.turn_off
          target:
            entity_id: switch.hallway
          action: light.turn_off
          target:
            entity_id: light.master_bedroom_light_grouptype or paste code here
2

Your indentation is a bit off (under “copy:”) and I’m guessing you did a find and replace to rename service: to action: in your config files?

It deleted all the action list markers “-”

switch:
  - platform: template
    switches:
        copy:
          value_template: "{{ is_state('switch.source', 'on') }}"
          friendly_name: "relax time"
          turn_on:
            - action: switch.turn_on
              target:
                entity_id: switch.hallway
            - action: switch.turn_off
              target:
                entity_id: switch.kitchen
            - action: light.turn_on
              target:
                entity_id: light.master_bedroom_light_group
            - action: switch.turn_on
              target:
                entity_id: switch.tv_josh_switch
          turn_off:
            - action: switch.turn_off
              target:
                entity_id: switch.hallway
            - action: light.turn_off
              target:
                entity_id: light.master_bedroom_light_grouptype or paste code here