ConcurrentModificationException during deployment

20:29:41,817 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./contextRoot.UndertowDeploymentInfoService: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./contextRoot.UndertowDeploymentInfoService: Failed to start service
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1978)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1153)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.lang.Thread.run(Thread.java:785)
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1448)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1472)
	at org.jboss.weld.util.collections.Iterators$TransformingIterator.next(Iterators.java:142)
	at org.jboss.weld.util.collections.Iterators$TransformingIterator.next(Iterators.java:142)
	at org.jboss.weld.util.collections.Iterators$CombinedIterator.hasNext(Iterators.java:95)
	at org.jboss.weld.util.collections.Iterators$CombinedIterator.hasNext(Iterators.java:94)
	at org.jboss.weld.resolution.AbstractTypeSafeBeanResolver$1.computeValue(AbstractTypeSafeBeanResolver.java:151)
	at org.jboss.weld.resolution.AbstractTypeSafeBeanResolver$1.computeValue(AbstractTypeSafeBeanResolver.java:146)
	at org.jboss.weld.util.LazyValueHolder.get(LazyValueHolder.java:49)
	at org.jboss.weld.resolution.AbstractTypeSafeBeanResolver.getBeans(AbstractTypeSafeBeanResolver.java:238)
	at org.jboss.weld.resolution.AbstractTypeSafeBeanResolver.getAllBeans(AbstractTypeSafeBeanResolver.java:217)
	at org.jboss.weld.resolution.TypeSafeResolver.findMatching(TypeSafeResolver.java:102)
	at org.jboss.weld.resolution.TypeSafeResolver.access$000(TypeSafeResolver.java:41)
	at org.jboss.weld.resolution.TypeSafeResolver$ResolvableToBeanCollection.apply(TypeSafeResolver.java:52)
	at org.jboss.weld.resolution.TypeSafeResolver$ResolvableToBeanCollection.apply(TypeSafeResolver.java:43)
	at org.jboss.weld.util.cache.ReentrantMapBackedComputingCache$1.apply(ReentrantMapBackedComputingCache.java:55)
	at org.jboss.weld.util.cache.ReentrantMapBackedComputingCache$1.apply(ReentrantMapBackedComputingCache.java:51)
	at org.jboss.weld.util.cache.ReentrantMapBackedComputingCache.getValue(ReentrantMapBackedComputingCache.java:64)
	at org.jboss.weld.resolution.TypeSafeResolver.resolve(TypeSafeResolver.java:88)
	at org.jboss.weld.manager.BeanManagerImpl.getBeans(BeanManagerImpl.java:557)
	at org.jboss.as.weld.deployment.WeldClassIntrospector.getInjectionTarget(WeldClassIntrospector.java:77)
	at org.jboss.as.weld.deployment.WeldClassIntrospector.createFactory(WeldClassIntrospector.java:57)
	at org.jboss.as.ee.component.ComponentRegistry.createInstanceFactory(ComponentRegistry.java:76)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService.createServletConfig(UndertowDeploymentInfoService.java:726)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService.start(UndertowDeploymentInfoService.java:273)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
	at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
	... 3 more