java.util.ServiceConfigurationError

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    • java.util.ServiceConfigurationError: io.undertow.servlet.ServletExtension: Provider mypackage.MyServletExtension not a subtype at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:85) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[rt.jar:1.8.0_60] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[rt.jar:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[rt.jar:1.8.0_60] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[rt.jar:1.8.0_60] at java.lang.Thread.run(Thread.java:745)[rt.jar:1.8.0_60] at org.jboss.threads.JBossThread.run(JBossThread.java:320)[jboss-threads-2.2.0.Final.jar:2.2.0.Final] Caused by: java.util.ServiceConfigurationError: io.undertow.servlet.ServletExtension: Provider mypackage.MyServletExtension not a subtype at java.util.ServiceLoader.fail(ServiceLoader.java:239)[rt.jar:1.8.0_60] at java.util.ServiceLoader.access$300(ServiceLoader.java:185)[rt.jar:1.8.0_60] at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:376)[rt.jar:1.8.0_60] at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)[rt.jar:1.8.0_60] at java.util.ServiceLoader$1.next(ServiceLoader.java:480)[rt.jar:1.8.0_60] at io.undertow.servlet.core.DeploymentManagerImpl.handleExtensions(DeploymentManagerImpl.java:243) at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:150) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82) ... 6 more

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