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Root Cause Analysis

  1. java.util.ServiceConfigurationError

    io.undertow.servlet.ServletExtension: Provider mypackage.MyServletExtension not a subtype

    at java.util.ServiceLoader.fail()
  2. Java RT
    ServiceLoader$1.next
    1. java.util.ServiceLoader.fail(ServiceLoader.java:239)[rt.jar:1.8.0_60]
    2. java.util.ServiceLoader.access$300(ServiceLoader.java:185)[rt.jar:1.8.0_60]
    3. java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:376)[rt.jar:1.8.0_60]
    4. java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)[rt.jar:1.8.0_60]
    5. java.util.ServiceLoader$1.next(ServiceLoader.java:480)[rt.jar:1.8.0_60]
    5 frames
  3. Undertow Servlet
    DeploymentManagerImpl.deploy
    1. io.undertow.servlet.core.DeploymentManagerImpl.handleExtensions(DeploymentManagerImpl.java:243)
    2. io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:150)
    2 frames
  4. WildFly: Undertow
    UndertowDeploymentService$1.run
    1. org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
    2. org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82)
    2 frames
  5. Java RT
    Thread.run
    1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[rt.jar:1.8.0_60]
    2. java.util.concurrent.FutureTask.run(FutureTask.java:266)[rt.jar:1.8.0_60]
    3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[rt.jar:1.8.0_60]
    4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[rt.jar:1.8.0_60]
    5. java.lang.Thread.run(Thread.java:745)[rt.jar:1.8.0_60]
    5 frames
  6. JBoss Threads
    JBossThread.run
    1. org.jboss.threads.JBossThread.run(JBossThread.java:320)[jboss-threads-2.2.0.Final.jar:2.2.0.Final]
    1 frame