Dojo相关错误：声明：mixin＃0不是可调用的构造函数

Question

在我们的项目中，我们使用的是Dojo和JavaScript。我们收到以下错误

Error: declare: mixin #0 is not a callable constructor.

我们编写的代码如下 -

[ require({
    packages : [ {
        name : "dojoWidget",
        location : "/wle/js/DojoWidgets"
    } ]
}, [ "dojox/widget/Standby", "dijit/form/Button", "dojo/_base/array", "dijit/layout/BorderContainer", "dojoWidget/SolutionEditor/partitionContentPane", "dijit/layout/ContentPane", 
     "dojoWidget/SolutionEditor/wleDefinitionTree", "dojoWidget/SolutionEditor/SolutionEditorConstants" ,
     "dojoWidget/OneTimeHelp/OneTimeHelp",     
     "dijit/Menu", "dijit/MenuItem",
        "dojo/domReady!" ], function(Standby, Button, array, BorderContainer, partitionContentPane, ContentPane, 
                dT, solutionEditorConstants, OneTimeHelp, Menu, MenuItem) {

    wleDefinitionTreeSizedFlag = false;
    SEConstants = new solutionEditorConstants();
    isSized = function(xml){
        for (var i = 0; i < xml.childNodes.length; i++){
            if (xml.childNodes[i].tagName == "Tier"){
                for (var j = 0; j <xml.childNodes[i].childNodes.length; j++){
                    if (xml.childNodes[i].childNodes[j].tagName == "System"){
                        for (var k = 0; k <xml.childNodes[i].childNodes[j].childNodes.length; k++){
                            if (xml.childNodes[i].childNodes[j].childNodes[k].tagName == "ImmediateSelection" ||
                                    xml.childNodes[i].childNodes[j].childNodes[k].tagName == "GrowtheSelection"){
                                    return true;
                            }
                        }
                        return false;
                    }
                }
            }
        }
    };
    require([ "dojo/ready", "dojox/xml/parser" ], function(ready, parser) {
        ready(function() {
            var isPrune = getCookie("isPrune");             
            var mem=getCookie("modifiedMemoryObj");
            document.cookie = "isPrune=; expires=Thu, 01 Jan 1970 00:00:00 UTC"; 
            document.cookie = "modifiedMemoryObj=; expires=Thu, 01 Jan 1970 00:00:00 UTC"; 
            loadTreeFromRest(contextRoot + "rest/sizing?sessionID=" + document.getElementById('sessionID').value+"&isPrune="+isPrune+"&useMemory="+mem);
        });
    }); ]

任何人都可以告诉我为什么会收到这个错误..以前它工作正常。 谢谢