Exception in thread "pool-2-thread-1" java.lang.NullPointerException: Cannot invoke "org.opendaylight.yangtools.binding.DataObjectIdentifier.steps()" because "nodeId" is null
	at org.opendaylight.l2switch.loopremover.flow.InitialFlowWriter$InitialFlowWriterProcessor.run(InitialFlowWriter.java:162)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)