面板弹出拖入资源就会报错（停靠在主编辑器不会）：
Uncaught ReferenceError: cc is not defined
at HTMLElement._isTypeValid (C:\CocosDashboard_1.0.1\resources.editors\Creator\2.3.2\resources\app.asar\editor\page\ui\elements\asset.js:1)
at C:\CocosDashboard_1.0.1\resources.editors\Creator\2.3.2\resources\app.asar\editor\page\ui\elements\asset.js:1
at EventEmitter. (C:\CocosDashboard_1.0.1\resources.editors\Creator\2.3.2\resources\app.asar\editor-framework\lib\renderer\ipc.js:1)
at EventEmitter.emit (events.js:194)
