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Empty id attribute is not allowed
java.lang.IllegalArgumentException: Empty id attribute is not allowed	at javax.faces.component.UIComponentBase.validateId(UIComponentBase.java:540)	at javax.faces.component.UIComponentBase.setId(UIComponentBase.java:367)	at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.assignUniqueId(ComponentTagHandlerDelegateImpl.java:306)	at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:147)	at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:114)	at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:131)	at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:162)	at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:114)	at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:131)	at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:162)	at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:114)	at javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:131)	at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:162)	at javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:114)	at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:94)	at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:89)	at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:94)	at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:79)	at com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:148)	at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:734)	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:96)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:309)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)	at java.lang.Thread.run(Unknown Source)