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org.ajax4jsf.component.AjaxViewRoot cannot be cast to org.richfaces.component.html.HtmlDataTable
java.lang.ClassCastException: org.ajax4jsf.component.AjaxViewRoot cannot be cast to org.richfaces.component.html.HtmlDataTable	at org.richfaces.taglib.DataTableTag.setProperties(DataTableTag.java:673)	at javax.faces.webapp.UIComponentClassicTagBase.findComponent(UIComponentClassicTagBase.java:604)	at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1111)	at org.apache.jsp.pages.table_jsp._jspx_meth_rich_005fdataTable_005f0(table_jsp.java:106)	at org.apache.jsp.pages.table_jsp._jspService(table_jsp.java:74)	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)