错误：set Assigning an instance of 'esri.***' which is not a subclass of 'esri.***‘

    1.    出现 set Assigning an instance of 'esri.***' which is not a subclass of 'esri.***‘的错误原因 是 因为没有找见文件

    2.   [esri.core.Accessor] Accessor#set Assigning an instance of 'esri.layers.GraphicsLayer' which is not a subclass of 'esri.Graphic' 

          原因 ：p= new GraphicsLayer({"id":"p"});      view.graphics.add(p, 2);