Cannot invoke "java.util.concurrent.CompletableFuture.whenComplete(java.util.function.BiConsumer)" because the return value of "com.baidu.bifromq.basecluster.messenger.IMessenger.send(com.baidu.bifromq.basecluster.proto.ClusterMessage, java.net.InetSocketAddress, boolean)" is null

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@7bc9e57f[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@30e718d5[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@4f4e671]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@63984218[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 29]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@80a2760[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@2a50b130[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@1c8753c]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@6841e4f1[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 34]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@7b757b4c[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@573d7639[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@1d81a4e9]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@39ae6f45[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 25]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@429055ff[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@6e6aff11[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@3fb52f19]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@7be3099e[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 5909]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@3de82df1[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@442cc598[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@28910dd6]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@4c9a4c87[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 49]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@547ca96f[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@43b7f282[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@45a3837c]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@63cc9403[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 30]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@438b079e[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@45b214af[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$362/0x00007f2b6c515360@84879ce]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@38008671[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1552]

Task io.micrometer.core.instrument.internal.TimedRunnable@20f6d1af rejected from java.util.concurrent.ThreadPoolExecutor@7afd5072[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 115]

Task io.micrometer.core.instrument.internal.TimedRunnable@3ad4c298 rejected from java.util.concurrent.ThreadPoolExecutor@3eeb411a[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 224]