Steps to Reproduce

1. run with zk 10 fl 20240110

Current Result

16:58:25.454 [http-nio-8080-exec-4] ERROR o.z.w.util.resource.ExtendletLoader - Failed to parse /js/pivot/css/pivottable.css.dsp
org.zkoss.zel.ELException: Function 'c:isExplorer' not found
at org.zkoss.zel.impl.lang.ExpressionBuilder.visit(ExpressionBuilder.java:208)
at org.zkoss.zel.impl.parser.SimpleNode.accept(SimpleNode.java:141)
at org.zkoss.zel.impl.lang.ExpressionBuilder.prepare(ExpressionBuilder.java:150)
at org.zkoss.zel.impl.lang.ExpressionBuilder.build(ExpressionBuilder.java:168)
at org.zkoss.zel.impl.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:231)
at org.zkoss.zel.impl.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:66)
at org.zkoss.xel.zel.ELFactory.parseExpression(ELFactory.java:43)
at org.zkoss.web.servlet.dsp.impl.ActionNode.addAttribute(ActionNode.java:106)

Expected Result

no error