quartz报这个,咋搞?

Caused by: java.io.NotSerializableException: Unable to serialize JobDataMap for insertion into database because the value of property 'targetObject' is not serializable: org.nutz.dao.impl.NutDao
 at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.serializeJobData(StdJDBCDelegate.java:3040)
 at org.quartz.impl.jdbcjobstore.oracle.OracleDelegate.insertJobDetail(OracleDelegate.java:154)
 at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJob(JobStoreSupport.java:1111)
 ... 68 more