Failed to boot JBoss:
java.lang.Exception: Encountered exception in server startup
at org.jboss.bootstrap.impl.mc.server.AbstractMCServerBase.bootstrapMcAndDescriptors(AbstractMCServerBase.java:350)
at org.jboss.bootstrap.impl.mc.server.AbstractMCServerBase.doStart(AbstractMCServerBase.java:282)
at org.jboss.bootstrap.impl.as.server.AbstractJBossASServerBase.doStart(AbstractJBossASServerBase.java:381)
at org.jboss.bootstrap.impl.base.server.AbstractServer$StartServerTask.run(AbstractServer.java:413)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException: Incompletely deployed:

DEPLOYMENTS IN ERROR:
Deployment "DeclaredStructure" is in error due to: java.lang.ClassNotFoundException: org.jboss.deployment.ExplicitDeclaredStructure

at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.internalValidate(AbstractKernelDeployer.java:278)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.validate(AbstractKernelDeployer.java:174)
at org.jboss.bootstrap.impl.mc.server.AbstractMCServerBase.bootstrapMcAndDescriptors(AbstractMCServerBase.java:339)