When i start server i am getting error,Please suugest what is the issue

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09:31:56,625 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC00001: Failed to start service jboss.deployment.unit."XYZ.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."XYZ.war".PARSE: Failed to process phase PARSE of deployment "XYZ.war"

  at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

  at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_13]

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_13]

  at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_13]

Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS018014: Failed to parse XML descriptor "/home/stpl/NIKHILSkilRock/jboss-as-7.1.1.Final/standalone/deployments/XYZ.war/WEB-INF/web.xml" at [10,5]

  at org.jboss.as.web.deployment.WebParsingDeploymentProcessor.deploy(WebParsingDeploymentProcessor.java:114)

  at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]

  ... 5 more

09:31:56,631 INFO  [org.jboss.as] (MSC service thread 1-2) JBAS015951: Admin console listening on http://0.0.0.0:9990

09:31:56,631 ERROR [org.jboss.as] (MSC service thread 1-2) JBAS015875: JBoss AS 7.1.1.Final "Brontes" started (with errors) in 3363ms - Started 144 of 224 services (3 services failed or missing dependencies, 73 services are passive or on-demand)

09:31:56,632 INFO  [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS015870: Deploy of deployment "XYZ.war" was rolled back with failure message {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"XYZ.war\".PARSE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"XYZ@.war\".PARSE: Failed to process phase PARSE of deployment \"XYZ.war\""}}

09:31:56,650 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015877: Stopped deployment XYZ.war in 17ms

09:31:56,651 INFO  [org.jboss.as.controller] (DeploymentScanner-threads - 2) JBAS014774: Service status report

JBAS014777:   Services which failed to start:      service jboss.deployment.unit."XYZ.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."XYZ.war".PARSE: Failed to process phase PARSE of deployment "XYZ.war"

09:31:56,654 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"XYZ.war\".PARSE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"XYZ.war\".PARSE: Failed to process phase PARSE of deployment \"XYZ.war\""}}}}