Exception executing consequence for rule "requiredCpuPowerTotal" in testpkg: java.lang.NullPointerException
	at org.drools.core.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
	...
Caused by: java.lang.NullPointerException
	at org.drools.core.base.accumulators.JavaAccumulatorFunctionExecutor$JavaAccumulatorFunctionContext.getAccumulatedObjects(JavaAccumulatorFunctionExecutor.java:208)
	at org.drools.core.reteoo.FromNodeLeftTuple.getAccumulatedObjects(FromNodeLeftTuple.java:94)
	at org.drools.core.common.AgendaItem.getObjectsDeep(AgendaItem.java:79)
	at org.drools.core.reteoo.RuleTerminalNodeLeftTuple.getObjectsDeep(RuleTerminalNodeLeftTuple.java:359)