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org.xml.sax.SAXParseException: Element type "filter" must be declared.	at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1016)	at org.apache.xerces.validators.common.XMLValidator.reportRecoverableXMLError(XMLValidator.java:1252)	at org.apache.xerces.validators.common.XMLValidator.validateElementAndAttributes(XMLValidator.java:2721)	at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator.java:823)	at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1222)	at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:380)	at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:908)	at javax.xml.parsers.SAXParser.parse(SAXParser.java:314)	at javax.xml.parsers.SAXParser.parse(SAXParser.java:89)	at org.apache.catalina.util.xml.XmlMapper.readXml(XmlMapper.java:275)	at org.apache.catalina.startup.ContextConfig.applicationConfig(ContextConfig.java:312)	at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1005)	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:257)	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:155)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:3702)	at com.iplanet.ias.web.WebModule.start(WebModule.java:251)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)	at org.apache.catalina.core.StandardHost.start(StandardHost.java:652)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:355)	at org.apache.catalina.startup.Embedded.start(Embedded.java:995)	at com.iplanet.ias.web.WebContainer.start(WebContainer.java:431)	at com.iplanet.ias.web.WebContainer.startInstance(WebContainer.java:500)	at com.iplanet.ias.server.J2EERunner.confPostInit(J2EERunner.java:161)