activiti5.22.0整合modeler时，打开的流程页面不显示工具栏和左边的控件栏，产生如下的错误：
TypeError: Cannot read property 'split' of undefined
at Object.ORYX.Core.StencilSet.stencilSet (oryx.debug.js:8640)
at oryx.debug.js:8619
at prototype-1.5.1.js:446
at Array._each (prototype-1.5.1.js:672)
at Array.each (prototype-1.5.1.js:445)
at Object.ORYX.Core.StencilSet.stencilSets (oryx.debug.js:8618)
at classDef.getStencilSets (oryx.debug.js:11705)
at classDef._createCanvas (oryx.debug.js:11187)
at classDef.construct (oryx.debug.js:10921)
at classDef (oryx.debug.js:1747)
检查发现，原来是stencilset.json文件没有在classes目录下
