I found the following warning in my logs:
2019-12-27 15:18:34.082 [WARN ] [mmon.WrappedScheduledExecutorService] - Scheduled runnable ended with an exception:
java.lang.NullPointerException: null
at org.eclipse.smarthome.model.rule.runtime.internal.engine.RuleContextHelper.getContext(RuleContextHelper.java:67) ~[?:?]
at org.eclipse.smarthome.model.rule.runtime.internal.engine.RuleEngineImpl.lambda$2(RuleEngineImpl.java:311) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_222]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_222]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) ~[?:1.8.0_222]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) ~[?:1.8.0_222]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
How can I track down the root cause for this problem?
Thanks,
Boby