Deployment fails due to java.lang.Error: Maximum permit count exceeded

Issue

The following exception is thrown during application deployment, causing the deployment to fail:

2025-07-25 16:06:15,534 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 89) MSC000001: Failed to start service jboss.deployment.unit."app.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit."app.war".undertow-deployment: java.lang.Error: Maximum permit count exceeded
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
        at java.lang.Thread.run(Thread.java:750)
        at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: java.lang.Error: Maximum permit count exceeded
        at java.util.concurrent.Semaphore$Sync.tryReleaseShared(Semaphore.java:192)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.releaseShared(AbstractQueuedSynchronizer.java:1341)
        at java.util.concurrent.Semaphore.release(Semaphore.java:426)
        at io.reactivex.internal.operators.flowable.FlowableUsing$UsingSubscriber.onComplete(FlowableUsing.java:139)
        at io.reactivex.internal.subscriptions.EmptySubscription.complete(EmptySubscription.java:69)
        at io.reactivex.internal.operators.flowable.FlowableFromIterable.subscribe(FlowableFromIterable.java:61)
        at io.reactivex.internal.operators.flowable.FlowableFromIterable.subscribeActual(FlowableFromIterable.java:47)
        at io.reactivex.Flowable.subscribe(Flowable.java:14805)
        at io.reactivex.Flowable.subscribe(Flowable.java:14752)
        at io.reactivex.internal.operators.flowable.FlowableUsing.subscribeActual(FlowableUsing.java:74)
        at io.reactivex.Flowable.subscribe(Flowable.java:14805)
        at io.reactivex.internal.operators.flowable.BlockingFlowableIterable.iterator(BlockingFlowableIterable.java:42)
        at org.infinispan.util.Closeables.iterator(Closeables.java:30)
        at org.infinispan.stream.impl.local.PersistenceKeyStreamSupplier.lambda$buildStream$4(PersistenceKeyStreamSupplier.java:92)
        at org.infinispan.util.LazyConcatIterator.hasNext(LazyConcatIterator.java:43)
        at java.util.Spliterators$IteratorSpliterator.tryAdvance(Spliterators.java:1811)
        at java.util.stream.StreamSpliterators$WrappingSpliterator.lambda$initPartialTraversalState$0(StreamSpliterators.java:295)
        at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.fillBuffer(StreamSpliterators.java:207)
        at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.doAdvance(StreamSpliterators.java:162)
        at java.util.stream.StreamSpliterators$WrappingSpliterator.tryAdvance(StreamSpliterators.java:301)
        at java.util.Spliterators$1Adapter.hasNext(Spliterators.java:681)
        at org.wildfly.clustering.web.infinispan.session.InfinispanSessionManagerFactory$ScheduleExpirationTask.run(InfinispanSessionManagerFactory.java:311)
        at org.wildfly.clustering.web.infinispan.session.InfinispanSessionManager.start(InfinispanSessionManager.java:117)
        at org.wildfly.clustering.web.undertow.session.DistributableSessionManager.start(DistributableSessionManager.java:89)
        at io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:559)
        at io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:556)
        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
        at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:598)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:97)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
        ... 8 more

• The web.xml file contains the <distributable/>.