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$ScheduledFutureTask@5aa0028c[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@4a81dc6e[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@5a96e968]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@34c9710f[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 28]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@38d4ebb8[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@16ebd1ec[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@394d370f]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@5e739e0e[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 35]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@5e935634[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@6c6f4428[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@68538e3c]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@50be39a5[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 24]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@242851f[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@3a336b22[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@32981af3]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@7871fd04[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 9834]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@7b691a5b[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@33714995[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@5801228d]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@3c7fb79d[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 49]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@37094532[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@27c51a8b[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@56f1338b]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@25ee8a17[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 21]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@2357ec4d[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@750b1057[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$297/0x00007efd78497b08@217ca554]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@12745cba[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1868]