Encountering NullPointerException, WorkFlow failure after Java 11 upgrade Code refactorig on SO-bpmn-infra code base.

2020-09-23T10:47:38.397Z||org.onap.so.client.cds.CDSProcessingHandler - Completed blueprint(1.0.0:PNF_CDS_RESTCONF) for action(1.0.0)
2020-09-23T10:47:38.397Z|4e104e12-5539-4557-b31e-00369398c214|org.onap.so.client.cds.CDSProcessingClient - CDSProcessingClient stopped
2020-09-23T10:47:38.402Z|4e104e12-5539-4557-b31e-00369398c214|o.o.s.b.i.scripts.GenericPnfSoftwareUpgrade - Prepare Completion of PNF Software Upgrade for requestId: 4e104e12-5539-4557-b31e-00369398c214
2020-09-23T10:47:38.430Z|4e104e12-5539-4557-b31e-00369398c214|o.o.s.b.i.scripts.GenericPnfSoftwareUpgrade - CompleteMsoProcessRequest of PNF Software Upgrade - 
<aetgt:MsoCompletionRequest xmlns:aetgt="http://org.onap/so/workflow/schema/v1"
                            xmlns:ns="http://org.onap/so/request/types/v1"
                            xmlns="http://org.onap/so/infra/vnf-request/v1">
   <request-info>
      <request-id>4e104e12-5539-4557-b31e-00369398c214</request-id>
      <action>UPDATE</action>
      <source>VID</source>
   </request-info>
   <aetgt:status-message>PNF has been upgraded successfully.</aetgt:status-message>
   <aetgt:mso-bpel-name>PNF_SOFTWARE_UPGRADE</aetgt:mso-bpel-name>
</aetgt:MsoCompletionRequest>
2020-09-23T10:47:38.437Z||org.onap.so.bpmn.common.scripts.CompleteMsoProcess - CompleteMsoProcess Request: <aetgt:MsoCompletionRequest xmlns:aetgt="http://org.onap/so/workflow/schema/v1"
                            xmlns:ns="http://org.onap/so/request/types/v1"
                            xmlns="http://org.onap/so/infra/vnf-request/v1">
   <request-info>
      <request-id>4e104e12-5539-4557-b31e-00369398c214</request-id>
      <action>UPDATE</action>
      <source>VID</source>
   </request-info>
   <aetgt:status-message>PNF has been upgraded successfully.</aetgt:status-message>
   <aetgt:mso-bpel-name>PNF_SOFTWARE_UPGRADE</aetgt:mso-bpel-name>
</aetgt:MsoCompletionRequest>
2020-09-23T10:47:38.437Z||org.onap.so.bpmn.common.scripts.CompleteMsoProcess - Incoming Request is: <aetgt:MsoCompletionRequest xmlns:aetgt="http://org.onap/so/workflow/schema/v1"
                            xmlns:ns="http://org.onap/so/request/types/v1"
                            xmlns="http://org.onap/so/infra/vnf-request/v1">
   <request-info>
      <request-id>4e104e12-5539-4557-b31e-00369398c214</request-id>
      <action>UPDATE</action>
      <source>VID</source>
   </request-info>
   <aetgt:status-message>PNF has been upgraded successfully.</aetgt:status-message>
   <aetgt:mso-bpel-name>PNF_SOFTWARE_UPGRADE</aetgt:mso-bpel-name>
</aetgt:MsoCompletionRequest>
2020-09-23T10:47:38.455Z||org.onap.so.bpmn.common.scripts.CompleteMsoProcess - Internal error while updating request db2020-09-23T10:47:38.455Z||org.onap.so.bpmn.common.scripts.CompleteMsoProcess - Internal error while updating request dbjava.lang.NullPointerException: null at org.onap.so.db.request.client.RequestsDbClient.getSingleResponse(RequestsDbClient.java:485) at org.onap.so.db.request.client.RequestsDbClient.getInfraActiveRequests(RequestsDbClient.java:304) at org.onap.so.db.request.client.RequestsDbClient$getInfraActiveRequests.call(Unknown Source) at org.onap.so.bpmn.common.scripts.CompleteMsoProcess.updateInfraRequestDB(CompleteMsoProcess.groovy:85) at org.onap.so.bpmn.common.scripts.CompleteMsoProcess$updateInfraRequestDB.call(Unknown Source) at Script5.run(Script5.groovy:3) at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:317) at org.codehaus.groovy.jsr223.GroovyCompiledScript.eval(GroovyCompiledScript.java:71) at java.scripting/javax.script.CompiledScript.eval(Unknown Source) at org.camunda.bpm.engine.impl.scripting.CompiledExecutableScript.evaluate(CompiledExecutableScript.java:54) at org.camunda.bpm.engine.impl.scripting.SourceExecutableScript.evaluate(SourceExecutableScript.java:60) at org.camunda.bpm.engine.impl.scripting.ExecutableScript.execute(ExecutableScript.java:62) at org.camunda.bpm.engine.impl.scripting.env.ScriptingEnvironment.execute(ScriptingEnvironment.java:100) at org.camunda.bpm.engine.impl.scripting.env.ScriptingEnvironment.execute(ScriptingEnvironment.java:86) at org.camunda.bpm.engine.impl.delegate.ScriptInvocation.invoke(ScriptInvocation.java:46) at org.camunda.bpm.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:57) at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocationInContext(DefaultDelegateInterceptor.java:90) at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:62) at org.camunda.bpm.engine.impl.bpmn.behavior.ScriptTaskActivityBehavior$1.call(ScriptTaskActivityBehavior.java:54) at org.camunda.bpm.engine.impl.bpmn.behavior.ScriptTaskActivityBehavior$1.call(ScriptTaskActivityBehavior.java:50) at org.camunda.bpm.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.executeWithErrorPropagation(AbstractBpmnActivityBehavior.java:110) at org.camunda.bpm.engine.impl.bpmn.behavior.ScriptTaskActivityBehavior.performExecution(ScriptTaskActivityBehavior.java:50) at org.camunda.bpm.engine.impl.bpmn.behavior.TaskActivityBehavior.execute(TaskActivityBehavior.java:68) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:60) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:49) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueIfExecutionDoesNotAffectNextOperation(PvmExecutionImpl.java:1988) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:41) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:30) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:107) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:640) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:614) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:1927) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:1924) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueExecutionIfNotCanceled(PvmExecutionImpl.java:1994) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:1943) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:1924)
 at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:60) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:60) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:30) at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:67) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:107) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:72) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:649) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:624) at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:60) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:107) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:72) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:649) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:624) at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:60) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:107) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:72) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:649) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:624) at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:60) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:107) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:640) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:614) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionCreateScope.scopeCreated(PvmAtomicOperationTransitionCreateScope.java:37) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:53) at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:27) at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:95) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:127) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:114) at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:82) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:640) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:614) at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.start(PvmExecutionImpl.java:246) at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:449) at org.camunda.bpm.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:62) at org.camunda.bpm.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:34) at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:27) at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:106) at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:45) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:43)
 at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:69) at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:69) at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:32) at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.executeWithVariablesInReturn(ProcessInstantiationBuilderImpl.java:165) at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.execute(ProcessInstantiationBuilderImpl.java:131) at org.camunda.bpm.engine.impl.ProcessInstantiationBuilderImpl.execute(ProcessInstantiationBuilderImpl.java:127) at org.camunda.bpm.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:114) at org.onap.so.bpmn.common.workflow.service.WorkflowProcessor.startProcess(WorkflowProcessor.java:63) at org.onap.so.bpmn.common.workflow.service.WorkflowProcessor$$FastClassBySpringCGLIB$$6d25d9ab.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at org.onap.logging.filter.spring.MDCTaskDecorator.lambda$decorate$0(MDCTaskDecorator.java:36) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source)2020-09-23T10:47:38.456Z||org.onap.so.bpmn.common.scripts.ExceptionUtil - Building a WorkflowException for Subflow CompleteMsoProcess2020-09-23T10:47:38.457Z||org.onap.so.bpmn.common.scripts.ExceptionUtil - Outgoing WorkflowException is WorkflowException[processKey=CompleteMsoProcess,errorCode=2000,errorMessage=Internal Error - Occured in update infra request db,workStep=*,extSystemErrorSource=null]2020-09-23T10:47:38.457Z||org.onap.so.bpmn.common.scripts.ExceptionUtil - Throwing MSOWorkflowException2020-09-23T10:47:38.596Z|4e104e12-5539-4557-b31e-00369398c214|o.o.s.b.common.workflow.service.WorkflowProcessor - [WRKFLOW-RESOURCE]Process GenericPnfSoftwareUpgrade:253bc65d-fd8a-11ea-bdbf-0242ac13000b ENDED