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java.lang.NoSuchMethodError: io.undertow.servlet.websockets.ServletWebSocketHttpExchange.getBufferPool()Lorg/xnio/Pool;	at org.springframework.web.socket.server.standard.UndertowRequestUpgradeStrategy$1.handleUpgrade(UndertowRequestUpgradeStrategy.java:152)	at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:350)	at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:225)	at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1202)	at io.undertow.server.HttpServerExchange.terminateResponse(HttpServerExchange.java:1479)	at io.undertow.server.Connectors.terminateResponse(Connectors.java:99)	at io.undertow.server.protocol.http.HttpTransferEncoding$3.handleEvent(HttpTransferEncoding.java:197)	at io.undertow.server.protocol.http.HttpTransferEncoding$3.handleEvent(HttpTransferEncoding.java:195)	at io.undertow.conduits.HeadStreamSinkConduit.exitFlush(HeadStreamSinkConduit.java:178)	at io.undertow.conduits.HeadStreamSinkConduit.flush(HeadStreamSinkConduit.java:122)	at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162)	at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:119)	at org.xnio.channels.Channels.flushBlocking(Channels.java:63)	at io.undertow.servlet.spec.ServletOutputStreamImpl.close(ServletOutputStreamImpl.java:609)	at io.undertow.servlet.spec.HttpServletResponseImpl.closeStreamAndWriter(HttpServletResponseImpl.java:473)	at io.undertow.servlet.spec.HttpServletResponseImpl.responseDone(HttpServletResponseImpl.java:557)	at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:331)	at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)	at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)	at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:198)	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:784)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:744)