Error:  Tests run: 64, Failures: 1, Errors: 0, Skipped: 37, Time elapsed: 152.0 s <<< FAILURE! -- in org.apache.pulsar.broker.service.BrokerServiceTest
  Error:  org.apache.pulsar.broker.service.BrokerServiceTest.testShutDownWithMaxConcurrentUnload -- Time elapsed: 8.098 s <<< FAILURE!
  java.lang.NullPointerException: Cannot invoke "org.apache.pulsar.broker.service.BrokerService.getTopics()" because the return value of "org.apache.pulsar.broker.PulsarService.getBrokerService()" is null
  	at org.apache.pulsar.broker.service.BrokerServiceTest.lambda$testShutDownWithMaxConcurrentUnload$0(BrokerServiceTest.java:185)
  	at org.awaitility.core.AssertionCondition.lambda$new$0(AssertionCondition.java:53)
  	at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:248)
  	at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:235)
  	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
  	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
  	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
  	at java.base/java.lang.Thread.run(Thread.java:1583)