我从Ext JS 4.2.3升级到5.0.1，我有以下错误。有什么想法吗？
Uncaught TypeError: Cannot read property 'idProperty' of undefinedext-all-debug.js:68239 Ext.define.applyRootext-all-debug.js:6842 setterext-all-debug.js:121857 Ext.define.initComponentext-all-debug.js:36830 Ext.define.constructorext-all-debug.js:8144 Ext.Base.Base.addMembers.callParent