加入interceptors后报错

dao : {
		type : "org.nutz.dao.impl.NutDao",
		args : [ {
			refer : "dataSource"
		} ],
		fields : {
			interceptors : [ "log", // 默认的日志还需要的
			"time"// 加个时间又如何呢?
			]
		}

报错：

Caused by: java.lang.NoSuchFieldException: Can NOT find field [interceptors] in class [org.nutz.dao.impl.NutDao] and it's parents classes

why？