Extjs, Uncaught TypeError: Cannot read property 'dom' of null

Uncaught TypeError: Cannot read property 'dom' of null

查了一下，原来表格定义中一个xtype写错了：

{
	header: "日期1",
	dataIndex: "value1",
	menuDisabled: true,
	sortable: true,
	align: 'left',
	xtype:'date'
}

正确的应该是datefield