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$ScheduledFutureTask@5f96ec66[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@4ec78d80[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@27446628]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@76859f1e[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 28]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@4f71f2ab[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@647c1fd8[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@711e1682]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@33306817[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 34]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@652db09b[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@24bd7f7f[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@172c0bd1]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@11e7a248[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 28]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@5a0ff259[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@299d6456[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@169519e8]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@53babbfb[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 7332]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@2892583f[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@4a06f39[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@2a1b2fdc]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@3d3f1ff[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 44]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@54a1170b[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@6e9bbb22[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@6c717065]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@1782909c[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 30]

Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@523e3d71[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@23b3156d[Wrapped task = com.baidu.bifromq.basekv.store.util.AsyncRunner$$Lambda$433/0x00007f4a7c4def08@2d345255]] rejected from java.util.concurrent.ScheduledThreadPoolExecutor@45116502[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1396]

Uncaught exception in the SynchronizationContext. Re-thrown.