XML parsing error messages every 10 seconds

I’m getting the below error messages in the HA log every 10 seconds. While I can see issues with parsing and XML file, I have no idea which file this is.

All I know is that the errors started to appear when I tried to play a Media|RadioBrowser station on my SoundTouch 30.

Any idea what could cause this?

2024-12-05 08:46:23.835 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved (None)
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/xml/etree/ElementTree.py", line 1706, in feed
    self.parser.Parse(data, False)
xml.parsers.expat.ExpatError: not well-formed (invalid token): line 1, column 0
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 1046, in _async_update_entity_states
    await entity.async_update_ha_state(True)
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 962, in async_update_ha_state
    self._async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1132, in _async_write_ha_state
    self.__async_calculate_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1091, in __async_calculate_state
    if (entity_picture := self.entity_picture) is not None:
                          ^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/media_player/__init__.py", line 1081, in entity_picture
    return self.media_image_local
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/media_player/__init__.py", line 1086, in media_image_local
    if (image_hash := self.media_image_hash) is None:
                      ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/media_player/__init__.py", line 652, in media_image_hash
    if (url := self.media_image_url) is not None:
               ^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/dlna_dmr/media_player.py", line 894, in media_image_url
    return self._device.media_image_url
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/async_upnp_client/profiles/dlna.py", line 1198, in media_image_url
    items = _cached_from_xml_string(xml)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/async_upnp_client/profiles/dlna.py", line 239, in _cached_from_xml_string
    return didl_lite.from_xml_string(xml, strict=False)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/didl_lite/didl_lite.py", line 1077, in from_xml_string
    xml_el = defusedxml.ElementTree.fromstring(xml_string)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/defusedxml/common.py", line 126, in fromstring
    parser.feed(text)
  File "/usr/local/lib/python3.12/xml/etree/ElementTree.py", line 1708, in feed
    self._raiseerror(v)
  File "/usr/local/lib/python3.12/xml/etree/ElementTree.py", line 1615, in _raiseerror
    raise err
xml.etree.ElementTree.ParseError: not well-formed (invalid token): line 1, column 0