Sun One Web Server Start Up Error

I have added filters in my application. I get the below error when I try to restart my application from Sun One Web Server,

info: CORE3282: stdout: PARSE error at line 6 column 10

info: CORE3282: stdout: org.xml.sax.SAXParseException: Element type "filter" must be declared.

failure: ContextConfig[] WEB3524: Parse error in application web.xml

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(XMLV alidator.java:1252)

at org.apache.xerces.validators.common.XMLValidator.validateElementAndAttributes(X MLValidator.java:2721)

at org.apache.xerces.validators.common.XMLValidator.callStartElement(XMLValidator. java:823)

at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDo cumentScanner.java:1222)

at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.jav a: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.j ava: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)

failure: ContextConfig[]: WEB3525: Occurred at line 6 column 10

failure: ContextConfig[]: WEB3541: Marking this application unavailable due to previous error(s)

failure: WebModule[]: WEB2705: Context startup failed due to previous errors

failure: WebModule[]: WEB2720: Error initializing naming context for context

javax.naming.NamingException: WEB3880: Unknown context name : StandardEngine[null].StandardHost[https-sitarmor84].StandardContext[]

at org.apache.naming.ContextBindings.bindThread(ContextBindings.java:207)

at org.apache.catalina.core.StandardContext.bindThread(StandardContext.java:4123)

at org.apache.catalina.core.StandardContext.stop(StandardContext.java:3811)

at com.iplanet.ias.web.WebModule.stop(WebModule.java:329)

at org.apache.catalina.core.StandardContext.start(StandardContext.java:3782)