Jenkins bot can't post via incoming Webhook: ""

I try to connect our Jenkins instance to our RocketChat instance.
I installed the app from the marketplace.
When I try to curl via Webhook in a specific channel, it's not working

Description:

debug: 2023-12-07T11:00:40.747Z Appelant: anonymous OR constructor
[
  "webhook's post is being executed...",
  {
    "method": "post",
    "headers": {
      "connection": "upgrade",
      "host": "rocket.XX.XX",
      "x-real-ip": "XX.XXX.XX.XX",
      "x-forwarded-for": "XX.XX.XX.XX",
      "x-forward-proto": "http",
      "x-nginx-proxy": "true",
      "content-length": "338",
      "authorization": "Basic retracted",
      "user-agent": "curl/8.4.0",
      "accept": "*/*",
      "content-type": "application/json"
    },
    "query": {},
    "params": {},
    "content": {
      "emoji": ":smirk:",
      "text": "Example message",
      "channel": "JENKINS_INFO",
      "attachments": [
        {
          "title": "Rocket.Chat",
          "title_link": "https://rocket.chat",
          "text": "Rocket.Chat, the best open source chat",
          "color": "#764FA5"
        }
      ]
    },
    "privateHash": "x"
  }
]```

```error: 2023-12-07T11:00:40.750Z Appelant: apply -> apply
[
  "No `pid` received in the request query"
]```

```debug: 2023-12-07T11:00:40.750Z Appelant: anonymous OR constructor
[
  "webhook's post was successfully executed."
]```


### Server Setup Information:

- Version of Rocket.Chat Server: 6.5.0
- Operating System: Ubuntu 22.04
- Deployment Method: local install
- Number of Running Instances: 1
- NodeJS Version: v14.21.3
- MongoDB Version: 5.0.23 / wiredTiger (oplog Activated)

Start by reproducing the Jenkins-to-Rocket.Chat incoming Webhook request with curl and compare the request details with the logged error about the missing pid query parameter. Use the reported Rocket.Chat 6.5.0, NodeJS v14.21.3, Ubuntu 22.04, and MongoDB 5.0.23 setup; done means the webhook posts the supplied message to the specified channel.