数据库监听偶发报错，请问是什么原因？

watch err-Error: errCode: -402004 realtime listener rebuild watch fail | errMsg: Error: Watch Error {“code”:“SYS_ERR”,“message”:“Could not find master, query is not init or expired”} (requestid: 1575635954639_0.6883780333806895) (rebuildWatch requestId 1575635954639_0.6883780333806895)