Caused by: java.lang.RuntimeException: ETCD Service Failure! - sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at nwu.student.addsanddrops.workitemhandlers.AddAndDropModulesInStudentSystemWorkItemHandler.getService(AddAndDropModulesInStudentSystemWorkItemHandler.java:126)
	at nwu.student.addsanddrops.workitemhandlers.AddAndDropModulesInStudentSystemWorkItemHandler.executeWorkItem(AddAndDropModulesInStudentSystemWorkItemHandler.java:57)
	at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:69)
	at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:139)
	... 108 more
Caused by: assemble.edu.exceptions.OperationFailedException: ETCD Service Failure! - sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
	at za.ac.nwu.registry.EtcdRegistryClient.getWSEndpoint(EtcdRegistryClient.java:91)
	at nwu.teachingandlearning.studentadministration.studentrecordmaintenance.service.factory.StudentRecordMaintenanceServiceCRUDClientFactory.getStudentRecordMaintenanceServiceCRUD(StudentRecordMaintenanceServiceCRUDClientFactory.java:28)
	at nwu.student.addsanddrops.workitemhandlers.AddAndDropModulesInStudentSystemWorkItemHandler.getService(AddAndDropModulesInStudentSystemWorkItemHandler.java:122)
	... 111 more