io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1

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io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:101)
at com.yahoo.pulsar.client.impl.ProducerImpl.lambda$closeAsync$0(ProducerImpl.java:376)
at java.lang.Iterable.forEach(Iterable.java:75)
at com.yahoo.pulsar.client.impl.ProducerImpl.closeAsync(ProducerImpl.java:376)
at com.yahoo.pulsar.client.impl.PulsarClientImpl.lambda$closeAsync$4(PulsarClientImpl.java:314)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at com.yahoo.pulsar.client.impl.PulsarClientImpl.closeAsync(PulsarClientImpl.java:314)
at com.yahoo.pulsar.client.impl.PulsarClientImpl.close(PulsarClientImpl.java:287)
at com.yahoo.pulsar.broker.service.BacklogQuotaManagerTest.testAheadProducerOnHoldTimeout(BacklogQuotaManagerTest.java:506)
at sun.reflect.GeneratedMethodAccessor134.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:132)
at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeSingleClass(TestNGDirectoryTestSuite.java:112)
at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:99)
at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:147)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:290)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:242)

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