Hi,
In my error log file, there are many error occured such as follow:

IdleWorkerUtil: run.work : java.lang.NullPointerException|at com.wowza.wms.stream.livepacketizer.LiveStreamPacketi
zerBase.shutdown(LiveStreamPacketizerBase.java:272)|at com.wowza.wms.stream.MediaStreamMap.removeLiveStreamPacketizer(MediaStreamMap.java:1269)|a
t com.wowza.wms.stream.livepacketizer.LiveStreamPacketizerBase.checkTimeout(LiveStreamPacketizerBase.java:326)|at com.wowza.wms.stream.livepacket
izer.LiveStreamPacketizerBase.onIdle(LiveStreamPacketizerBase.java:262)|at com.wowza.wms.util.IdleWorkerUtil.run(IdleWorkerUtil.java:111)
I do not understand what's it meaning for, can someone explain why and when it would happened?

thanks!!!