Failed to download signed documents

I have installed and configured the OneSpan Laserfiche workflow, and it worked for the first two transactions. After that, it failed to download the signed document back into the repository. Below is the error message from the event viewer log.

Log Name:      Application

7/2/2024 3:31:59 AMError message from exception - 
One or more errors occurred.
  at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
  at EslConnector.EslApiService.ApiService.GetPackageDocuments(String packageId)
  at EslConnector.LFWFDownloadDocumentsCA.DownloadDocumentsCA.Execute(ActivityExecutionContext executionContext)
TResult GetResultCore(Boolean)
AggregateException

Error message from inner exception - 
One or more errors occurred.
  at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
  at EslConnector.EslApiService.ApiService.GetPackageDocuments(String packageId)
  at EslConnector.LFWFDownloadDocumentsCA.DownloadDocumentsCA.Execute(ActivityExecutionContext executionContext)
TResult GetResultCore(Boolean)
AggregateException

Additional message - 
Failed to download signed documents

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
 <System>
   <Provider Name="OneSpanSign" />
   <EventID Qualifiers="0">0</EventID>
   <Level>2</Level>
   <Task>0</Task>
   <Keywords>0x80000000000000</Keywords>
   <TimeCreated SystemTime="2024-07-02T07:31:59.685258300Z" />
   <EventRecordID>978101</EventRecordID>
   <Channel>Application</Channel>
   <Computer>LZ-DEV-SERVER.PSSSF.GO.TZ</Computer>
   <Security />
 </System>
 <EventData>
   <Data>7/2/2024 3:31:59 AMError message from exception - 
One or more errors occurred.
  at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
  at EslConnector.EslApiService.ApiService.GetPackageDocuments(String packageId)
  at EslConnector.LFWFDownloadDocumentsCA.DownloadDocumentsCA.Execute(ActivityExecutionContext executionContext)
TResult GetResultCore(Boolean)
AggregateException

Error message from inner exception - 
One or more errors occurred.
  at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
  at EslConnector.EslApiService.ApiService.GetPackageDocuments(String packageId)
  at EslConnector.LFWFDownloadDocumentsCA.DownloadDocumentsCA.Execute(ActivityExecutionContext executionContext)
TResult GetResultCore(Boolean)
AggregateException

Additional message - 
Failed to download signed documents
</Data>
 </EventData>
</Event>