Why config fails for dasshio addon

Hi guys i don’t know what i’m doing wrong.
I installed dasshio from https://github.com/danimtb/dasshio and edit the configuration like this:

timeout: 20
buttons:
  - name: finish
    address: '6C:56:97:4B:00:EA'
    domain: script
    service: abend_licht
    service_data: ''

When starting the addon the log says:

2020-12-30 16:51:36,490 | INFO | Reading config file: /data/options.json
2020-12-30 16:51:36,491 | ERROR | Parameter error for button 1: No [domain] or [service] provided
2020-12-30 16:51:36,492 | INFO | Exiting...

What is wrong ?

Thx for ur help.

Found it. “service_data” must not empty:

timeout: 20
buttons:

  • name: finish
    address: ‘6C:56:97:4B:00:EA’
    domain: script
    service: abend_licht
    service_data: ‘{}’