在后台连接了一个websocket连接,每60s就报如下错误,有知道这是什么情况的吗? 2020-09-10?14:22:40?[Catalina-utility-1]?ERROR?org.apache.coyote.http11.Http11NioProtocol?-Error?processing?async?timeouts java.util.concurrent.ExecutionException:?java.lang.AbstractMethodError:?Method?org/apache/tomcat/websocket/server/WsHttpUpgradeHandler.timeoutAsync(J)V?is?abstract at?java.util.concurrent.FutureTask.report(FutureTask.java:122) at?java.util.concurrent.FutureTask.get(FutureTask.java:192) at?org.apache.coyote.AbstractProtocol.startAsyncTimeout(AbstractProtocol.java:615) at?org.apache.coyote.AbstractProtocol$1.run(AbstractProtocol.java:598) at?java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at?java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at?java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at?java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at?java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at?java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at?org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at?java.lang.Thread.run(Thread.java:748) Caused?by:?java.lang.AbstractMethodError:?Method?org/apache/tomcat/websocket/server/WsHttpUpgradeHandler.timeoutAsync(J)V?is?abstract at?org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.timeoutAsync(WsHttpUpgradeHandler.java) at?org.apache.coyote.http11.upgrade.UpgradeProcessorInternal.timeoutAsync(UpgradeProcessorInternal.java:78) at?org.apache.coyote.AbstractProtocol$2.run(AbstractProtocol.java:626) ...?8?common?frames?omitted### 问题描述 ### 问题出现的环境背景及自己尝试过哪些方法 ### 相关代码 粘贴代码文本(请勿用截图) ### 你期待的结果是什么?实际看到的错误信息又是什么?
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