NestedRuntimeException...need help

Anyone can help me to analyze errors below?
Any feedback will be fully appreciated

exception 
exception
javax.servlet.ServletException:   
--- The error occurred in SmukEntry.xml.  
--- The error occurred while applying a result map.  
--- Check the AmbilSmukEntryUntukUpdate-AutoResultMap.  
--- The error happened while setting a property on the result object.  
--- Cause: com.ibatis.common.exception.NestedRuntimeException: Error setting properties of 'com.evisitek.smuk.SmukEntryDTO@e3f6d'.  Cause: java.lang.IllegalArgumentException
Caused by: java.lang.IllegalArgumentException
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause 
 
com.ibatis.common.jdbc.exception.NestedSQLException:   
--- The error occurred in SmukEntry.xml.  
--- The error occurred while applying a result map.  
--- Check the AmbilSmukEntryUntukUpdate-AutoResultMap.  
--- The error happened while setting a property on the result object.  
--- Cause: com.ibatis.common.exception.NestedRuntimeException: Error setting properties of 'com.evisitek.smuk.SmukEntryDTO@e3f6d'.  Cause: java.lang.IllegalArgumentException
Caused by: java.lang.IllegalArgumentException
Caused by: com.ibatis.common.exception.NestedRuntimeException: Error setting properties of 'com.evisitek.smuk.SmukEntryDTO@e3f6d'.  Cause: java.lang.IllegalArgumentException
Caused by: java.lang.IllegalArgumentException
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:188)
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:123)
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:610)
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:584)
com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java:101)
com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForList(SqlMapClientImpl.java:78)
com.evisitek.entries.SmukEntryDAO.getSmukEntries(SmukEntryDAO.java:162)
com.evisitek.entries.MainEntryAction.execute(MainEntryAction.java:312)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

Given that the top few entries of the root cause stack trace are iBATIS classes, it appears that this is a problem with your iBATIS Data Mapping, not a Struts problem.