Test for media_content_id KeyError

homeassistant/components/media_player/kodi.py

@@ -166,8 +166,9 @@ class KodiDevice(MediaPlayerDevice):
     @property
     def media_content_id(self):
         """ Content ID of current playing media. """
+        _LOGGER.debug(self._item)
         if self._item is not None:
-            return self._item['uniqueid']
+            return self._item.get('uniqueid', None)
 
     @property
     def media_content_type(self):