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org.xml.sax.SAXParseException: Element type "web-app" is not declared.	at org.apache.crimson.parser.Parser2.error(Parser2.java:3354)	at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1502)	at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:667)	at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)	at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)	at org.xml.sax.helpers.XMLReaderAdapter.parse(XMLReaderAdapter.java:223)	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)