I am using rich:suggestion box,I get the following error when i enter any value in the text box.I tried in both richfaces 3.1.4 and richfaces 3.2.0,but it is not working.

Error
PWC4011: Unable to set request character encoding to UTF-8 from context /Country-war, because request parameters have already been read, or ServletRequest.getReader() has already been called

JSP:
<h:inputText id="stateCode" value="#{stateMBean.state.stateCode}" styleClass="GeneralTxt" maxlength="5" size="5"/>
<rich:suggestionbox for="stateCode" width="100"height="100" suggestionAction="#{stateMBean.autocomplete}" var="suggest">
<h:column>
<h:outputText value="#{suggest.stateCode}"/>
</h:column>
</rich:suggestionbox>

Backingbean:


public List autocomplete(Object event) {
try {
System.out.println("inside autocomplete");
String pref = event.toString();

state.setStateCode(pref);
stateList = stateSRemote.findAll(state);


} catch (TnhspException ex) {

}
return stateList;
}

Thanks in advance.Request reply ASAP.