No buffer when close is called

ERROR \[org.teiid.PROCESSOR\] (Worker2_QueryProcessorQueue14) TEIID30019 Unexpected exception for request PcSx3Ps9Yxeq.7: java.lang.NullPointerException
	at org.teiid.query.processor.relational.SubqueryAwareEvaluator$SubqueryState.close(SubqueryAwareEvaluator.java:200) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.SubqueryAwareEvaluator.reset(SubqueryAwareEvaluator.java:233) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.SubqueryAwareEvaluator.close(SubqueryAwareEvaluator.java:244) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.SubqueryAwareRelationalNode.closeDirect(SubqueryAwareRelationalNode.java:71) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.AccessNode.closeDirect(AccessNode.java:517) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalNode.close(RelationalNode.java:332) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalNode.close(RelationalNode.java:335) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:297) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.LimitNode.nextBatchDirect(LimitNode.java:102) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:278) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.ProjectNode.nextBatchDirect(ProjectNode.java:146) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:278) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.relational.RelationalPlan.nextBatch(RelationalPlan.java:136) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:151) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:114) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:159) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:141) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:450) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:332) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:260) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:274) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210) [teiid-engine-8.7.7.6_2-redhat-1.jar:8.7.7.6_2-redhat-1]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_65]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_65]
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_65]