Sending images doesn't work with ntfy or gotify

Third party integrations
1

Hi all,

Sending images doesn’t work with ntfy or gotify.

When I try to send a message trough ntfy or gotify, the images don’t get delivered.
The message and title does work.

I have tested this with ntfy and a gotify server, and both have the same issue.

This is my configuration.yaml:

notify:
  - name: "gotify_1"
    platform: rest
    resource: https://domainname/message
    method: POST_JSON
    headers: 
        X-Gotify-Key: *******
        Content-Type: application/json

platform: gotify, ntfy or rest makes no difference.

This is my script for gotify:

service: notify.gotify_1
data:
  message: This is a test message
  data:
    priority: 10
    extras:
      bigImageUrl: https://placekitten.com/400/300

This is on my gotify server:
2024-06-21T07:37:19Z | 200 | 19.87588ms | IP | POST “/message”
2024-06-21T07:37:20Z | 200 | 179.841µs | IP | GET “/static/defaultapp.png”
2024-06-21T07:37:26Z | 404 | 29.403µs | IP | GET “/home/ws?since=none”

But showing only the text
What am I doing wrong?
When I send the notifications via the companion app, the images do work.