Error:Syntax error, unrecognized expression: unsupported pseudo: selectCheckboxMenu_panel
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<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>SelectCheckboxMenu Error</title>
</h:head>
<h:body>
<h:form id="form">
<p:selectCheckboxMenu id="selectCheckboxMenu" label="Options">
<f:selectItems value="#{backingBean.items}"/>
</p:selectCheckboxMenu>
<p:commandButton value="click" update="selectCheckboxMenu"/>
</h:form>
</h:body>
</html>