Org.xml.sax.saxparseexception:cvc-elt.1:cannot find the declaration of element ' taglib '.
At Org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException (Unknown Source)
At Org.apache.xerces.util.ErrorHandlerWrapper.error (Unknown Source)
At Org.apache.xerces.impl.XMLErrorReporter.reportError (Unknown Source)
At Org.apache.xerces.impl.XMLErrorReporter.reportError (Unknown Source)
At Org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement (Unknown Source)
At Org.apache.xerces.impl.xs.XMLSchemaValidator.startElement (Unknown Source)
At Org.apache.xerces.impl.dtd.XMLDTDValidator.startElement (Unknown Source)
At Org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement (Unknown Source)
At Org.apache.xerces.impl.xmldocumentscannerimpl$contentdispatcher.scanrootelementhook (Unknown Source)
At Org.apache.xerces.impl.xmldocumentfragmentscannerimpl$fragmentcontentdispatcher.dispatch (Unknown Source)
At Org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument (Unknown Source)
At Org.apache.xerces.parsers.XML11Configuration.parse (Unknown Source)
At Org.apache.xerces.parsers.XML11Configuration.parse (Unknown Source)
At Org.apache.xerces.parsers.XMLParser.parse (Unknown Source)
At Org.apache.xerces.parsers.AbstractSAXParser.parse (Unknown Source)
At Org.apache.tomcat.util.digester.Digester.parse (digester.java:1562)
At Org.apache.catalina.startup.TldConfig.tldScanStream (tldconfig.java:514)
At Org.apache.catalina.startup.TldConfig.tldScanJar (tldconfig.java:472)
At Org.apache.catalina.startup.TldConfig.execute (tldconfig.java:307)
At Org.apache.catalina.core.StandardContext.processTlds (standardcontext.java:4307)
At Org.apache.catalina.core.StandardContext.start (standardcontext.java:4144)
At Org.apache.catalina.core.ContainerBase.addChildInternal (containerbase.java:760)
At Org.apache.catalina.core.ContainerBase.addChild (containerbase.java:740)
At Org.apache.catalina.core.StandardHost.addChild (standardhost.java:544)
At Org.apache.catalina.startup.HostConfig.deployDirectory (hostconfig.java:927)
At Org.apache.catalina.startup.HostConfig.deployDirectories (hostconfig.java:890)
At Org.apache.catalina.startup.HostConfig.deployApps (hostconfig.java:492)
At Org.apache.catalina.startup.HostConfig.start (hostconfig.java:1150)
At Org.apache.catalina.startup.HostConfig.lifecycleEvent (hostconfig.java:311)
At Org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent (lifecyclesupport.java:120)
At Org.apache.catalina.core.ContainerBase.start (containerbase.java:1022)
At Org.apache.catalina.core.StandardHost.start (standardhost.java:736)
At Org.apache.catalina.core.ContainerBase.start (containerbase.java:1014)
At Org.apache.catalina.core.StandardEngine.start (standardengine.java:443)
At Org.apache.catalina.core.StandardService.start (standardservice.java:448)
At Org.apache.catalina.core.StandardServer.start (standardserver.java:700)
At Org.apache.catalina.startup.Catalina.start (catalina.java:552)
At Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native method)
At Sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)
At Sun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)
At Java.lang.reflect.Method.invoke (Unknown Source)
At Org.apache.catalina.startup.Bootstrap.start (bootstrap.java:295)
At Org.apache.catalina.startup.Bootstrap.main (bootstrap.java:433)
This exception is an XML file validation that was started when Tomcat was started. Simply change the xmlvalidation= "false" to false in the Server.xml file under the Tomcat con folder