Values don't refresh after a time

I configured OpenHab to work with MiHome devices.
It works well a short time, after the values (temperatures for example) does not get refreshed.

When I look at the logs, the following error shows up:

2018-12-26 19:33:59.191 [ERROR] [ome.core.thing.link.ThingLinkManager] - Exception occurred while informing handler: null
java.lang.NullPointerException: null
at java.util.concurrent.ConcurrentHashMap.get(Unknown Source) ~[?:?]
at org.openhab.binding.mihome.internal.handler.XiaomiBridgeHandler.getDeferredMessage(XiaomiBridgeHandler.java:211) ~[?:?]
at org.openhab.binding.mihome.internal.handler.XiaomiDeviceBaseHandler.handleCommand(XiaomiDeviceBaseHandler.java:122) ~[?:?]
at org.eclipse.smarthome.core.thing.binding.BaseThingHandler.channelLinked(BaseThingHandler.java:233) ~[?:?]
at org.eclipse.smarthome.core.thing.link.ThingLinkManager.lambda$0(ThingLinkManager.java:300) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:?]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:?]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source) [?:?]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
at java.lang.Thread.run(Unknown Source) [?:?]
2018-12-26 19:33:59.234 [ERROR] [ome.core.thing.link.ThingLinkManager] - Exception occurred while informing handler: null
java.lang.NullPointerException: null
at java.util.concurrent.ConcurrentHashMap.get(Unknown Source) ~[?:?]

Please help me in making it work.
I would be very sad if I would have to use another program for controlling the devices.
There must be somebody who knows how to solve this problem.

Thank You,
Sándor.

What is a short time, minuet, hour, day, week?

I would make sure OH has a static/reserved IP address in your router. Otherwise, if using DHCP, each time the address lease expires OH could be assigned a new address.

I bought a Rasperry Pi, I copied Openhabian to a card, I installed it, configured it and for more than a week it works perfect.
This is the solution.

So the problem was some incompatiblity with Oracle Java on Windows.

Best Regards,

Sándor.

CM6.5 H102 via openHAB Community bot@community.openhab.org ezt írta (időpont: 2019. márc. 17., V, 22:04):