<t:inputCalendar java.lang.IllegalStateException: error

when I just display the t:inputCalendar component  this error has been occured:

java.lang.IllegalStateException: Response already committed
        at
weblogic.servlet.internal.ServletResponseImpl.objectIfCommitted(ServletResponseImpl.java:1345)
        at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:570)
        at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:549)
        at
org.apache.myfaces.renderkit.html.util.DefaultAddResource.serveResource(DefaultAddResource.java:583)
 at
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:125)

............................
does anybody know what is problem? and here is my code for displaying calendar:

 <t:inputCalendar id="ip" monthYearRowClass="yearMonthHeader" weekRowClass="weekHeader"
                        currentDayCellClass="currentDayCell" value="" renderAsPopup="true"
                  popupDateFormat="dd/MM/yyyy"/>