APIs fail when oozie workflow entries are deleted

2016-01-19 14:41:42,261 INFO  - [ActiveMQ Session Task-56:] ~ Logging in pragya (CurrentUser:65)
2016-01-19 14:41:42,261 INFO  - [ActiveMQ Session Task-56:] ~ Creating Oozie client object for http://192.168.138.236:11000/oozie/ (OozieClientFactory:50)
2016-01-19 14:41:42,267 DEBUG - [ActiveMQ Session Task-56:] ~ Error while retrieving JMS connection info (OozieWorkflowEngine:613)
E1601 : E1601: Cannot retrieve JMS connection info [JMSTopicService is not initialized. JMS notificationmay not be enabled]
        at org.apache.oozie.client.OozieClient.handleError(OozieClient.java:542)
        at org.apache.oozie.client.OozieClient$JMSInfo.call(OozieClient.java:869)
        at org.apache.oozie.client.OozieClient$JMSInfo.call(OozieClient.java:856)
        at org.apache.oozie.client.OozieClient$ClientCallable.call(OozieClient.java:514)
        at org.apache.oozie.client.OozieClient.getJMSConnectionInfo(OozieClient.java:912)
        at org.apache.falcon.workflow.engine.OozieWorkflowEngine.isNotificationEnabled(OozieWorkflowEngine.java:604)
        at org.apache.falcon.workflow.WorkflowJobEndNotificationService.notifyWorkflowEnd(WorkflowJobEndNotificationService.java:214)
        at org.apache.falcon.workflow.WorkflowJobEndNotificationService.notifySuccess(WorkflowJobEndNotificationService.java:105)
        at org.apache.falcon.messaging.JMSMessageConsumer.invokeListener(JMSMessageConsumer.java:218)
        at org.apache.falcon.messaging.JMSMessageConsumer.onMessage(JMSMessageConsumer.java:114)
        at org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1393)
        at org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:131)
        at org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:202)
        at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:133)
        at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:48)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
2016-01-19 14:41:42,267 INFO  - [ActiveMQ Session Task-56:] ~ Creating Oozie client object for http://192.168.138.236:11000/oozie/ (OozieClientFactory:50)