Action center works in attended mode but not in unattended mode

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#1

Hello All,

I’m testing an automation which works perfectly fine in attended mode. As I started testing in unattended mode, it throws an error when kicked to action center.

Here are the logs.

Failed to process document. Exception: mscorlib : Attempted to access an element as a type incompatible with the array.

Process was aborted due to: System.ArrayTypeMismatchException: Attempted to access an element as a type incompatible with the array. at System.Collections.Generic.List`1.Add(T item) at UiPath.DocumentUnderstanding.Persistence.UiPathWebApi.Initialize() at UiPath.DocumentUnderstanding.Persistence.ActivityContextExtensions.GenerateClientFromContext(ActivityContext context, Int32 timeoutMs, String folderPath, CancellationToken cancellationToken) at UiPath.DocumentUnderstanding.Persistence.OrchestratorService.GetOrchestratorClient(ActivityContext context, Int32 timeoutMs, String folderPath, CancellationToken cancellationToken) at UiPath.IntelligentOCR.Activities.BaseOrchestratorClientAsyncActivity.BeginExecute(AsyncCodeActivityContext context, AsyncCallback callback, Object state) at System.Activities.AsyncCodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.ActivityInstance.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)

would anyone know why this would happen?

Please help.

thank you!

#2

Try to upgrade the Persistence activity package as it apparently was fixed in v1.4.0 https://docs.uipath.com/activities/docs/release-notes-uipath-persistence-activities#v140 and also set your project to Supports Persistence.

#3

Hello Marian,

Thank you for your reply. I’m on persistence activity package 1.4.3, does that mean I have to downgrade instead?

#4

Hey Marian,

I downgraded persistence activities, but unfortunately there’s no change. I’m still getting the same error mentioned above.

#5

Check the https://docs.uipath.com/activities/docs/release-notes-uipath-persistence-activities#v143 as there are some prerequisites for v1.4.3

Also https://docs.uipath.com/activities/docs/persistence-project-compatibility

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#6

Hello Marian,

My orchestrator version is 23.1.11-release-4 and persistence is 1.4.3, I do not find any release note related.

Unfortunately this error still persists, any help would be kindly appreciated.

#7

Some action items taken to find root cause,

  • Compare, validate and replicate folder permissions for unattended mode to reflect attended mode configurations.
  • Validate assets in DU and check access of each config assets required for action center.
  • Downgrade persistence activities (package activity in DU that needs to connect to action center) and checking versioning compatibility.
  • Set all action center config assets as string values (UiPath community recommendation) and retest.
#8

If you are an enterprise customer, feel free to raise a case with technical support.

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#9

I did, thank you so much :slight_smile:

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