Cannot find message resources under key org.apache.struts.action.MESSAGE

[Annie Chang]

Hi, I want to use chechboxes in an iterate as the follows, but there is
an error,
what's the matter?
 
  <logic:iterate id="order" name="OrdersForm" property="orderList">
  <tr>
     <td>
        <html:checkbox name="order" property="_selected_"/>
     </td>

Error:
ApplicationDispatcher[]: Servlet.service() for servlet debugjsp threw
exception
javax.servlet.ServletException: Cannot find message resources under key
org.apache.struts.action.MESSAGE
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:480)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatc
her.java:679)