Hi smacdonald2008 gauravb10066713 ,
thanks for the reply to this thread!
yeah its customized and the workflow with default process and its fails in continueupload? step and getting failure.

Error :
com.adobe.granite.workflow.WorkflowException: Process execution resulted in an error
at com.adobe.granite.workflow.core.job.HandlerBase.executeProcess(HandlerBase.java:199)
at com.adobe.granite.workflow.core.job.JobHandler.process(JobHandler.java:258)
at org.apache.sling.event.impl.jobs.JobConsumerManager$JobConsumerWrapper.process(JobConsumerManager.java:500)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl.startJob(JobQueueImpl.java:291)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl.access$100(JobQueueImpl.java:58)
at org.apache.sling.event.impl.jobs.queues.JobQueueImpl$1.run(JobQueueImpl.java:227)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: com.adobe.granite.workflow.WorkflowException: Failed to execute process
at com.day.cq.workflow.compatibility.CQWorkflowProcessRunner.execute(CQWorkflowProcessRunner.java:108)
at com.adobe.granite.workflow.core.job.HandlerBase.executeProcess(HandlerBase.java:189)
... 8 more
Caused by: com.day.cq.workflow.WorkflowException: com.day.cq.workflow.WorkflowException: Unable to retrieve workflow instance: /etc/workflow/instances/server0/2019-02-22/update_asset_11
at com.day.cq.dam.core.process.GateKeeperProcess.execute(GateKeeperProcess.java:84)
at com.day.cq.workflow.compatibility.CQWorkflowProcessRunner.execute(CQWorkflowProcessRunner.java:93)
... 9 more
Caused by: com.day.cq.workflow.WorkflowException: Unable to retrieve workflow instance: /etc/workflow/instances/server0/2019-02-22/update_asset_11
at com.day.cq.workflow.impl.CQWorkflowSessionWrapper.complete(CQWorkflowSessionWrapper.java:509)
at com.day.cq.dam.core.process.GateKeeperProcess.execute(GateKeeperProcess.java:72)
... 10 more
Caused by: javax.jcr.PathNotFoundException: /etc/workflow/instances/server0/2019-02-22/update_asset_11
at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getItem(SessionImpl.java:361)
at com.adobe.granite.repository.impl.CRX3SessionImpl.getItem(CRX3SessionImpl.java:168)
at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowNode(WorkflowManager.java:956)
at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowInstance(WorkflowManager.java:125)
at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowInstance(WorkflowManager.java:245)
at com.adobe.granite.workflow.core.WorkflowSessionImpl.completeInternal(WorkflowSessionImpl.java:1040)
at com.adobe.granite.workflow.core.WorkflowSessionImpl.complete(WorkflowSessionImpl.java:1032)
at com.day.cq.workflow.impl.CQWorkflowSessionWrapper.complete(CQWorkflowSessionWrapper.java:507)
... 11 more