Jenkins is hanged with below error message.

It seems that Prometheus plugin doesn't works well with version 2.12

Error log:

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SEVERE: A thread (RequestHandlerThread58952/5016351) died unexpectedly due to an uncaught exception, this may leave your Jenkins in a bad way and is usually indicative of a bug in the code.

java.lang.IllegalStateException: org.eclipse.jetty.util.SharedBlockingCallback$BlockerTimeoutException

        at org.eclipse.jetty.util.SharedBlockingCallback$Blocker.failed(SharedBlockingCallback.java:184)

        at org.eclipse.jetty.server.HttpChannel$CommitCallback.failed(HttpChannel.java:853)

        at org.eclipse.jetty.io.AbstractConnection$1.run(AbstractConnection.java:103)

        at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

        at java.lang.Thread.run(Thread.java:745)

Caused by: org.eclipse.jetty.util.SharedBlockingCallback$BlockerTimeoutException

        at org.eclipse.jetty.util.SharedBlockingCallback$Blocker.block(SharedBlockingCallback.java:216)

        at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:141)

        at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:355)

        at net.bull.javamelody.FilterServletOutputStream.write(FilterServletOutputStream.java:88)

        at net.bull.javamelody.CounterResponseStream.write(CounterResponseStream.java:82)

        at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)

        at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:282)

        at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125)

        at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:135)

        at java.io.OutputStreamWriter.write(OutputStreamWriter.java:220)

        at java.io.PrintWriter.write(PrintWriter.java:456)

        at java.io.PrintWriter.write(PrintWriter.java:473)

        at org.jenkinsci.plugins.prometheus.MetricsRequest$1.generateResponse(MetricsRequest.java:24)

        at org.kohsuke.stapler.HttpResponseRenderer$Default.handleHttpResponse(HttpResponseRenderer.java:124)

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