[avmfritz] NullPointerException in ThingHandler.handleCommand()

Binding version: 2.2.0 OpenHAB Package version: 2.2.0-1 FritzOS version: 06.50

Expected behaviour

Power outlet is switched on OpenHAB command.

Actual behaviour

Upon switching the switch (Basic UI or HABPanel) nothing happens and the following Error is logged:

[ERROR] [nal.common.AbstractInvocationHandler] - An error occurred while calling method 'ThingHandler.handleCommand()' on 'org.openhab.binding.avmfritz.handler.DeviceHandler@113317': null
java.lang.NullPointerException: null
	at org.openhab.binding.avmfritz.handler.DeviceHandler.handleCommand(DeviceHandler.java:162) [250:org.openhab.binding.avmfritz:2.2.0]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
	at org.eclipse.smarthome.core.internal.common.AbstractInvocationHandler.invokeDirect(AbstractInvocationHandler.java:153) [109:org.eclipse.smarthome.core:0.10.0.b1]
	at org.eclipse.smarthome.core.internal.common.InvocationHandlerSync.invoke(InvocationHandlerSync.java:59) [109:org.eclipse.smarthome.core:0.10.0.b1]
	at com.sun.proxy.$Proxy163.handleCommand(Unknown Source) [250:org.openhab.binding.avmfritz:2.2.0]
	at org.eclipse.smarthome.core.thing.internal.profiles.ProfileCallbackImpl.handleCommand(ProfileCallbackImpl.java:72) [116:org.eclipse.smarthome.core.thing:0.10.0.b1]
	at org.eclipse.smarthome.core.thing.internal.profiles.SystemDefaultProfile.onCommandFromItem(SystemDefaultProfile.java:49) [116:org.eclipse.smarthome.core.thing:0.10.0.b1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
	at org.eclipse.smarthome.core.internal.common.AbstractInvocationHandler.invokeDirect(AbstractInvocationHandler.java:153) [109:org.eclipse.smarthome.core:0.10.0.b1]
	at org.eclipse.smarthome.core.internal.common.Invocation.call(Invocation.java:53) [109:org.eclipse.smarthome.core:0.10.0.b1]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:?]
	at java.lang.Thread.run(Thread.java:745) [?:?]

According to Paper UI the FRITZ!Powerline 546E-Thing is correctly configured and the Switch Item is linked to its power outlet channel via text based configuration.

Here are some debug log entries from the avmfritz binding, which, as far as I can tell, show that the Thing is correctly cconfigured:

2018-01-19 13:06:06.712 [DEBUG] [nding.avmfritz.handler.DeviceHandler] - polling FRITZ!Box avmfritz:FRITZ_Powerline_546E_Solo:192_168_2_103
2018-01-19 13:06:06.760 [DEBUG] [ternal.hardware.FritzahaWebInterface] - GETting URL http://192.168.2.103:80/webservices/homeautoswitch.lua?switchcmd=getdevicelistinfos&sid=381e2190d275d1c1
2018-01-19 13:06:06.955 [DEBUG] [nal.hardware.FritzahaContentExchange] - HTTP response 200
2018-01-19 13:06:06.981 [DEBUG] [nal.hardware.FritzahaContentExchange] - HTTP response 200
2018-01-19 13:06:07.002 [DEBUG] [nal.hardware.FritzahaContentExchange] - response complete: <devicelist version="1"><device identifier="*:*:*:*:*:*" id="1000" functionbitmask="640" fwversion="06.50" manufacturer="AVM" productname="FRITZ!Powerline 546E"><present>1</present><name>FRITZ!Powerline 546E</name><switch><state>0</state><mode>auto</mode><lock>0</lock></switch><powermeter><power>0</power><energy>42139</energy></powermeter></device></devicelist>

2018-01-19 13:06:07.108 [DEBUG] [nding.avmfritz.handler.DeviceHandler] - set device model: org.openhab.binding.avmfritz.internal.ahamodel.DeviceModel@a26bdb[ain=*:*:*:*:*:*,bitmask=640,isDectRepeater=false,isPowermeter=true,isTempSensor=false,isSwitchableOutlet=true,isHeatingThermostat=false,id=1000,manufacturer=AVM,productname=FRITZ!Powerline 546E,fwversion=06.50,present=1,name=FRITZ!Powerline 546E,org.openhab.binding.avmfritz.internal.ahamodel.SwitchModel@809f41[state=0,mode=AUTOMATIC,lock=0,devicelock=<null>],org.openhab.binding.avmfritz.internal.ahamodel.PowerMeterModel@180bc0d[power=0.000,energy=42.139],<null>,<null>]

Completely removing Item, Thing and Binding and re-adding them did not change anything.

[thucke]

Hi @cweitkamp , thank you for this quick response. Maybe I was a bit too eager in in posting. I stuggled a bit around with my Fritz! configuration with the result that all is working now. I had to change the access method to “Powerline bridge” to include the adapter into my Fritz!Home setup.

[cweitkamp]

@thucke I am glad you got it working.