*scratch*.el

2015-05-12 22:33:18,681 ERROR [io.undertow.websockets.jsr.request] (default task-67) UT026001: Unable to instantiate endpoint: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922) [rt.jar:1.7.0_71]
        at java.util.HashMap$EntryIterator.next(HashMap.java:962) [rt.jar:1.7.0_71]
        at java.util.HashMap$EntryIterator.next(HashMap.java:960) [rt.jar:1.7.0_71]
        at java.util.HashMap.putAllForCreate(HashMap.java:554) [rt.jar:1.7.0_71]
        at java.util.HashMap.<init>(HashMap.java:298) [rt.jar:1.7.0_71]
        at io.undertow.websockets.jsr.UndertowSession.<init>(UndertowSession.java:100) [undertow-websockets-jsr-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.websockets.jsr.EndpointSessionHandler.onConnect(EndpointSessionHandler.java:113) [undertow-websockets-jsr-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.websockets.jsr.JsrWebSocketFilter$1.handleUpgrade(JsrWebSocketFilter.java:121) [undertow-websockets-jsr-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:307) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:212) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.HttpServerExchange$ExchangeCompleteNextListener.proceed(HttpServerExchange.java:1658) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.session.SessionAttachmentHandler$UpdateLastAccessTimeListener.exchangeEvent(SessionAttachmentHandler.java:113) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1160) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.HttpServerExchange.terminateResponse(HttpServerExchange.java:1383) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.Connectors.terminateResponse(Connectors.java:98) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.protocol.http.ServerFixedLengthStreamSinkConduit.channelFinished(ServerFixedLengthStreamSinkConduit.java:51) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.exitFlush(AbstractFixedLengthStreamSinkConduit.java:300) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.flush(AbstractFixedLengthStreamSinkConduit.java:234) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162) [xnio-api-3.3.0.Final.jar:3.3.0.Final]
        at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:118) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at org.xnio.channels.Channels.flushBlocking(Channels.java:63) [xnio-api-3.3.0.Final.jar:3.3.0.Final]
        at io.undertow.servlet.spec.ServletOutputStreamImpl.close(ServletOutputStreamImpl.java:609) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:497) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.servlet.spec.HttpServletResponseImpl.responseDone(HttpServletResponseImpl.java:581) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:308) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:180) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
        at org.projectodd.wunderboss.wildfly.WildFlyWeb$1.handleRequest(WildFlyWeb.java:80) [wunderboss-wildfly-1.x.incremental.236.jar:]
        at io.undertow.server.session.SessionAttachmentHandler.handleRequest(SessionAttachmentHandler.java:68) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_71]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_71]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_71]