Help please - automation - single execution is allowed?

Configuration
1

I dont get it. Ive got a simple automation but it keeps giving me this message.
Can someone help please?
Is this because of the 2 triggers? or the mode of the automation?

Triggered by the state of switch.shellywoonkamerlampknop at 6 maart 2023 om 07:22:29
Stopped because only a single execution is allowed at 6 maart 2023 om 07:22:29 (runtime: 0.00 seconds)

automation:

alias: Lampen hele woonkamer Aan
description: ""
trigger:
  - platform: device
    type: changed_states
    device_id: bc78fb09efb103a6933aae0aa723ef4a
    entity_id: switch.shellywoonkamerlampknop
    domain: switch
condition: []
action:
  - type: turn_on
    device_id: f1e8f510ad14049da00b939d51e0874f
    entity_id: switch.shellyeettafellampknop
    domain: switch
  - type: turn_on
    device_id: 0684d3b47aebcff9cfbc5feedb4bec64
    entity_id: light.huebeganegrond
    domain: light
    brightness_pct: 80
mode: single
2

mode: single will give that error if the automation is executed while it is still running.
You can add

max_exceeded: silent

to suppress that warning

3

Your automation is triggered by switch.shellywoonkamerlampknop changing state.

Then you turn switch.shellywoonkamerlampknop on, which changes its state if it’s off, triggering the automation.