discover error "nochannelserver"

[sMi]

i have a new one error and found no one answer how can i fix this

i think its something wrong with the prosody but i dont know what

can anyone post me an config example for this?

DEBUG: ["IN", "<iq xmlns='jabber:client' type='result' to='xxx@xxxxxxxx/42434c9c-692e-461d-ab04-b433f77eed75' from='xxxxxxxx' id='8113:sendIQ'><query xmlns='http://jabber.org/protocol/disco#items'/></iq>"] app.js:1

1. DEBUG: ["discover_channel_server error",
   Arguments[0]

   1. callee: function (){return app.error("discover_channel_server error",arguments),e.trigger("nochannelserver")}
   2. length: 0
   3. __proto__: Object
   ]

Arguments[0]

1. callee
: function (){return app.error("discover_channel_server error",arguments),e.trigger("nochannelserver")}

1. length
: 0

1. __proto__
: Object

1. ]

1. app.js:1

DEBUG: ["connection_event", "nochannelserver"]

thx in advance