Denon/Marantz binding: Exception occurred while informing handler: null

Add-ons Bindings
1

Dear Everyone!

Anyone who is using this binding actively, know why this happens for me since today morning? I haven’t changed any configuration in openHab since days, so this happened out of nowhere (Denon AVR is set to auto-update, so it might updated itself during the overnight, but I’m not sure)

The error which I get:

2018-09-03 12:15:45.354 [ERROR] [ome.core.thing.link.ThingLinkManager] - Exception occurred while informing handler: null
java.lang.NullPointerException: null
	at org.openhab.binding.denonmarantz.internal.connector.telnet.DenonMarantzTelnetConnector.internalSendCommand(DenonMarantzTelnetConnector.java:249) ~[?:?]
	at org.openhab.binding.denonmarantz.internal.connector.DenonMarantzConnector.sendMuteCommand(DenonMarantzConnector.java:108) ~[?:?]
	at org.openhab.binding.denonmarantz.handler.DenonMarantzHandler.handleCommand(DenonMarantzHandler.java:103) ~[?:?]
	at org.eclipse.smarthome.core.thing.binding.BaseThingHandler.channelLinked(BaseThingHandler.java:278) ~[?:?]
	at org.openhab.binding.denonmarantz.handler.DenonMarantzHandler.channelLinked(DenonMarantzHandler.java:373) ~[?:?]
	at org.eclipse.smarthome.core.thing.link.ThingLinkManager.lambda$0(ThingLinkManager.java:300) ~[?:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:?]
	at java.lang.Thread.run(Thread.java:748) [?:?]
2018-09-03 12:15:45.357 [ERROR] [ome.core.thing.link.ThingLinkManager] - Exception occurred while informing handler: null
java.lang.NullPointerException: null
	at org.openhab.binding.denonmarantz.internal.connector.telnet.DenonMarantzTelnetConnector.internalSendCommand(DenonMarantzTelnetConnector.java:249) ~[?:?]
	at org.openhab.binding.denonmarantz.internal.connector.DenonMarantzConnector.sendInputCommand(DenonMarantzConnector.java:76) ~[?:?]
	at org.openhab.binding.denonmarantz.handler.DenonMarantzHandler.handleCommand(DenonMarantzHandler.java:112) ~[?:?]
	at org.eclipse.smarthome.core.thing.binding.BaseThingHandler.channelLinked(BaseThingHandler.java:278) ~[?:?]
	at org.openhab.binding.denonmarantz.handler.DenonMarantzHandler.channelLinked(DenonMarantzHandler.java:373) ~[?:?]
	at org.eclipse.smarthome.core.thing.link.ThingLinkManager.lambda$0(ThingLinkManager.java:300) ~[?:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:?]
	at java.lang.Thread.run(Thread.java:748) [?:?]

In PaperUI the thing shows ‘Unknown’ status. Tried to restart openHab or reinstall the binding, it didn’t helped…

2

This seems really weird. I had the marketplace binding installed, now I have changed it to the denonmarantz 2.3.0 binding, but the same thing occurs…

3

No one? :frowning: I have even updated to 2.4.0 M3 and the issue is still there… However I can’t see the error, but still ‘Unknown’…

4

You should get a better log capture. Turn trace logging on for the binding and then wait for these errors to occur. Then attach that log here.

5

what is the package name of this binding? I know the command on how to set logging level (log:set TRACE …), but I always struggle to find the name of the binding (package name maybe?). Where I can find these?

Ps.: I think I found it: org.openhab.binding.denonmarantz…

Now I can see this binding on TRACE level, and I get errors like this:

2018-09-05 15:12:22.212 [TRACE] [ctor.telnet.DenonMarantzTelnetClient] - Socket timeout
6

I have restarted the AVR (pulled out from power source) and now it seems that it is working…

7

Yep, that’s the ticket.