Uncaught TypeError: Cannot set property 'selected' undefined

Dies ist mein JSFiddle

Meine html-und js funktioniert in JSFiddle. Aber seine Angabe der Fehler in der Konsole in meiner rails-app

Uncaught TypeError: Cannot set property 'selected' of undefined admin.js:1000
Chosen.result_select admin.js:1000
Chosen.search_results_mouseup admin.js:1000
(anonymous function) admin.js:1000
x.event.dispatch admin.js:6
v.handle

HTML

<div class="col-xs-3 equ">
       <select class = "car-select col-xs-10 col-sm-10 col-sm-offset-1 center boxalign" id = "brand">
          <option value="brand">Brand Select</option>
          <option value="volvo">Volvo</option>
          <option value="saab">Saab</option>
          <option value="mercedes1">Mercedes</option>
          <option value="audi">Audi</option>
          <option value="volvo2">Volvo</option>
          <option value="saab">Saab</option>
          <option value="mercedes">Mercedes</option>
          <option value="audi">Audi</option>
        </select>
    </div>

  <div class="col-xs-3 equ">
       <select class = "car-select col-xs-10 col-sm-10 col-sm-offset-1 center boxalign" id = "car">
          <option value="brand" class = "mercedes">Brand Select</option>
          <option value="volvo" class = "mercedes">Volvo</option>
          <option value="saab" class = "volvo">Saab</option>
          <option value="mercedes" class = "volvo">Mercedes</option>
          <option value="audi" class = "volvo">Audi</option>
          <option value="volvo" class = "mercedes">Volvo</option>
          <option value="saab" class = "mercedes">Saab</option>
          <option value="mercedes" class = "mercedes">Mercedes</option>
          <option value="audi" class = "mercedes">Audi</option>
        </select>
  </div>

JavaScript

$(".car-select").chosen({disable_search_threshold: 10});
$(".car-select-deselect").chosen({allow_single_deselect:true}); 
  $(function() {
    $("#car").chained("#brand"); 
    $("#brand").trigger("liszt:updated");   
    $("#brand").bind("change", function(){
    $("#car").trigger("liszt:updated")
    });
});