No Approve Request generated after final approver

org.kuali.rice.kew.exception.RouteManagerException: org.kuali.rice.kew.exception.RouteManagerException: No Approve Request generated after final approver
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.process(StandardWorkflowEngine.java:154)
    at org.kuali.rice.kew.impl.document.DocumentProcessingQueueImpl.processWithOptions(DocumentProcessingQueueImpl.java:62)
    at sun.reflect.GeneratedMethodAccessor1807.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at com.sun.proxy.$Proxy181.processWithOptions(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1806.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker.invokeService(MessageServiceInvoker.java:157)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker$1.doInTransaction(MessageServiceInvoker.java:72)
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:131)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker.run(MessageServiceInvoker.java:67)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.kuali.rice.kew.exception.RouteManagerException: No Approve Request generated after final approver
    at org.kuali.rice.kew.engine.node.RequestsNode.verifyFinalApprovalRequest(RequestsNode.java:163)
    at org.kuali.rice.kew.engine.node.RoleNode.processCustom(RoleNode.java:107)
    at org.kuali.rice.kew.engine.node.RequestsNode.process(RequestsNode.java:56)
    at org.kuali.rice.kew.engine.transition.SimpleTransitionEngine.isComplete(SimpleTransitionEngine.java:35)
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.processNodeInstance(StandardWorkflowEngine.java:183)
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.process(StandardWorkflowEngine.java:143)
    ... 23 more