ansible – cant set wallpaper in xfce4 with xfconf "failed to init libxfconf " – Debian

I try to set a wallpaper on Debian Systems with ansible on xfce4 desktops. For this I looked up the official documentation: https://docs.ansible.com/ansible/latest/collections/community/general/xfconf_module.html

My Task:

  - name: set wallpaper
    become_user: odin
    xfconf:
      channel: "xfce4-desktop"
      property: "/backdrop/screen0/{{item}}/image-path"
      value_type: "string"
      value: ['/usr/share/backgrounds/xfce/802192.jpg']
    loop:
      - monitor0
      - monitor1
      - monitorDP-1
      - monitoreDP-1

I receive the following error:

XFConfException: xfconf-query failed with error (rc=1): Failed to init libxfconf: Error spawning command line “dbus-launch --autolaunch=2e66f568a1c34fda92dcec58e724b679 --binary-syntax --close-stderr”: Child process exited with code 1.

failed: [localhost] (item=monitoreDP-1) => {
    "ansible_loop_var": "item",
    "changed": false,
    "invocation": {
        "module_args": {
            "channel": "xfce4-desktop",
            "force_array": false,
            "property": "/backdrop/screen0/monitoreDP-1/image-path",
            "state": "present",
            "value": [
                "/usr/share/backgrounds/xfce/802192.jpg"
            ],
            "value_type": [
                "string"
            ]
        }
    },
    "item": "monitoreDP-1",
    "msg": "Module failed with exception: xfconf-query failed with error (rc=1): Failed to init libxfconf: Error spawning command line “dbus-launch --autolaunch=2e66f568a1c34fda92dcec58e724b679 --binary-syntax --close-stderr”: Child process exited with code 1.",                                                                                                                                                                                                                    
    "output": {
        "ansible_facts": {
            "xfconf": {}
        },
        "cmd_args": [
            "/usr/bin/xfconf-query",
            "--channel",
            "xfce4-desktop",
            "--property",
            "/backdrop/screen0/monitoreDP-1/image-path"
        ],
        "force_lang": "C",
        "rc": 1,
        "stderr": "Failed to init libxfconf: Error spawning command line “dbus-launch --autolaunch=2e66f568a1c34fda92dcec58e724b679 --binary-syntax --close-stderr”: Child process exited with code 1.n",
        "stdout": ""
    },
    "vars": {
        "cmd_args": [
            "/usr/bin/xfconf-query",
            "--channel",
            "xfce4-desktop",
            "--property",
            "/backdrop/screen0/monitoreDP-1/image-path"
        ]
    }
}

I thought about copying the xml config for xfce4-desktop on to every machine, but not every machine has the same screen "monitor" property.