Third party library is dependent on dojox resulting in: 404 - file not found for file: mxclientsystem/dojox/html/metrics.js

define(["dojo/_base/declare","mxui/widget/_WidgetBase","dijit/_TemplatedMixin","mxui/dom","dojo/dom","dojo/dom-prop","dojo/dom-geometry","dojo/dom-class","dojo/dom-style","dojo/dom-construct","dojo/_base/array","dojo/_base/lang","dojo/text","dojo/html","dojo/_base/event","HaasGrid/lib/jquery-1.11.2","HaasGrid/lib/dojox/html/entities","HaasGrid/lib/dojox/html/metrics","HaasGrid/lib/gridx/Grid","HaasGrid/lib/gridx/core/model/cache/Sync","HaasGrid/lib/dstore/Memory","dojo/text!HaasGrid/widget/template/HaasGrid.html"

], function (declare, _WidgetBase, _TemplatedMixin, dom, dojoDom, dojoProp, dojoGeometry, dojoClass, dojoStyle, dojoConstruct, dojoArray, dojoLang, dojoText, dojoHtml, dojoEvent,
            _jQuery, dojoxEntities, dojoxMetrics, gridx, gridxCache, dstoreMemory, widgetTemplate) {

I'm importing the modules I need this way, correct?

Despite that, Mendix is giving me:

404 - file not found for file: mxclientsystem/dojox/html/entities.js
404 - file not found for file: mxclientsystem/dojox/html/metrics.js