[ https://issues.jboss.org/browse/WFLY-1561?page=com.atlassian.jira.plugin.... ] Mike Polan updated WFLY-1561: ----------------------------- Description: I am getting a NullPointerException when attempting to deploy a WAR file on a JBoss 7.1.1.Final instance running on an IBM z/OS 1.13 mainframe. I tried running JBoss with IBM Java 6 and 7, both 64-bit, and got the same effect. I should also note that this WAR file contains no JBoss-specific configuration files (it's being ported from another servlet container), and that I do NOT encounter this exception when deploying on the same JBoss release on a Windows 7 machine. I do not know of a workaround for this problem. This stack trace appears after the "Starting deployment of app.war" message: 08:42:33,875 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC00001: Failed to start service jboss.deployment.unit."app.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."app.war".PARSE: Failed to process phase PARSE of deployment "app.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$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0] at java.lang.Thread.run(Thread.java:736) [vm.jar:1.6.0] Caused by: java.lang.NullPointerException at org.jboss.metadata.parser.util.MetaDataElementParser.readDTDLocation(MetaDataElementParser.java:319) at org.jboss.metadata.parser.jsp.TldMetaDataParser.parse(TldMetaDataParser.java:58) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.parseTLD(TldParsingDeploymentProcessor.java:126) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.processTlds(TldParsingDeploymentProcessor.java:107) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.deploy(TldParsingDeploymentProcessor.java:83) 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 I believe that I tracked down the offending code in the git repository (looks like "loc" is null): https://github.com/jboss/metadata/blob/d3a85c7869430831577035aad153c43203... Is there any way to enable some sort of logging so that I could see what file JBoss is trying to parse? was: I am getting a NullPointerException when attempting to deploy a WAR file on a JBoss 7.1.1.Final instance running on an IBM z/OS 1.13 mainframe. I tried running JBoss with IBM Java 6 and 7, both 64-bit, and got the same effect. I should also note that this WAR file contains no JBoss-specific configuration files (it's being ported from another servlet container), and that I do NOT encounter this exception when deploying on the same JBoss release on a Windows 7 machine. I do not know of a workaround for this problem. This stack trace appears after the "Starting deployment of app.war" message: 08:42:33,875 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC00001: Failed to start service jboss.deployment.unit."app.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."app.war".PARSE: Failed to process phase PARSE of deployment "app.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$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0] at java.lang.Thread.run(Thread.java:736) [vm.jar:1.6.0] Caused by: java.lang.NullPointerException at org.jboss.metadata.parser.util.MetaDataElementParser.readDTDLocation(MetaDataElementParser.java:319) at org.jboss.metadata.parser.jsp.TldMetaDataParser.parse(TldMetaDataParser.java:58) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.parseTLD(TldParsingDeploymentProcessor.java:126) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.processTlds(TldParsingDeploymentProcessor.java:107) at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.deploy(TldParsingDeploymentProcessor.java:83) 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 -- This message is automatically generated by JIRA. 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