ParallelStepTest.access$000:34->buildTable:397 » NullPointer

java.lang.NullPointerException
	at org.jenkinsci.plugins.workflow.support.visualization.table.FlowGraphTable$Row.access$200(FlowGraphTable.java:233)
	at org.jenkinsci.plugins.workflow.support.visualization.table.FlowGraphTable.order(FlowGraphTable.java:222)
	at org.jenkinsci.plugins.workflow.support.visualization.table.FlowGraphTable.build(FlowGraphTable.java:60)
	at org.jenkinsci.plugins.workflow.cps.steps.ParallelStepTest.buildTable(ParallelStepTest.java:397)
	at org.jenkinsci.plugins.workflow.cps.steps.ParallelStepTest.access$000(ParallelStepTest.java:34)
	at org.jenkinsci.plugins.workflow.cps.steps.ParallelStepTest$9.evaluate(ParallelStepTest.java:340)