15:37:01,520 ERROR [stderr] (XNIO-1 task-9) Exception in thread "XNIO-1 task-9" java.lang.StackOverflowError
15:37:01,521 ERROR [stderr] (XNIO-1 task-9)   at java.util.concurrent.locks.ReentrantLock$Sync.nonfairTryAcquire(ReentrantLock.java:134)
15:37:01,522 ERROR [stderr] (XNIO-1 task-9) 	at java.util.concurrent.locks.ReentrantLock.tryLock(ReentrantLock.java:370)
15:37:01,522 ERROR [stderr] (XNIO-1 task-9) 	at java.util.concurrent.ConcurrentHashMap$Segment.put(ConcurrentHashMap.java:431)
15:37:01,522 ERROR [stderr] (XNIO-1 task-9) 	at java.util.concurrent.ConcurrentHashMap.putIfAbsent(ConcurrentHashMap.java:1149)
15:37:01,522 ERROR [stderr] (XNIO-1 task-9) 	at java.lang.ClassLoader.getClassLoadingLock(ClassLoader.java:462)
15:37:01,522 ERROR [stderr] (XNIO-1 task-9) 	at java.lang.ClassLoader.loadClass(ClassLoader.java:403)
15:37:01,523 ERROR [stderr] (XNIO-1 task-9) 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
15:37:01,523 ERROR [stderr] (XNIO-1 task-9) 	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
15:37:01,523 ERROR [stderr] (XNIO-1 task-9) 	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:371)
15:37:01,523 ERROR [stderr] (XNIO-1 task-9) 	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:119)
15:37:01,523 ERROR [stderr] (XNIO-1 task-9) 	at io.undertow.server.handlers.resource.URLResource$1ServerTask.run(URLResource.java:117)
15:37:01,524 ERROR [stderr] (XNIO-1 task-9) 	at io.undertow.server.handlers.resource.URLResource$1ServerTask.onComplete(URLResource.java:129)
15:37:01,524 ERROR [stderr] (XNIO-1 task-9)   at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:79)