this is part of my rules file that should switch all lights of a group (group only contains lights) with one action:
gruppeOG?.members.forEach[sw| logInfo('rules','Schalte an: ' + sw.name) sendCommand(sw, ON) ]
this is the output:
2017-02-07 17:15:18.188 [INFO ] [org.openhab.model.script.rules] - Schalte an: eg_og_licht_treppe 2017-02-07 17:15:18.194 [ERROR] [o.o.c.s.ScriptExecutionThread ] - Error during the execution of rule 'Szenen-Verwaltung': Could not invoke method: org.openhab.model.script.actions.BusEvent.sendCommand(org.openhab.core.items.Item,java.lang.String) on instance: null
I can’t see what I did wrong… Can anybody help? Thanks!