mac系统日志，开机出现localhost com.apple.xpc.launchd[1] (com.apple.opendirectoryd): Unknown key for Boolean: BeginTransactionAtShutdown 表示什么意思？

mac系统日志，开机出现
localhost com.apple.xpc.launchd1: Unknown key for Boolean: BeginTransactionAtShutdown
与
localhost com.apple.xpc.launchd1: Service has increased maximum shutdown time to 65 seconds. This will create a poor experience for the user.

表示什么意思，之前关机出现故障没能完全关闭么？

就是有一个进程拖慢了关机的进程。