Getting Error in Present Validation Station

[James_Taylor]

I started with the demo sample code the was provide at:

Receipt and Invoice AI - Now available in Public Preview!

Our new Receipt and Invoice AI is now available in Public Preview! Note: The Receipt and Invoice AI Extraction ML model is a Cloud Platform offering and is currently not available for on-premise ML model deployments. This new AI capability gives your UiPath Robots the ability to read both invoices and receipts and will help streamline your automations around accounts payable and expense compliance processes. All the details you’ll need to get started are below, including an overview of this…

Found out it doesn’t like pdf receipts, so I went to :Free Online Receipt Maker - Sales Receipt - Custom Receipt - Fake Receipt
To create a fake receipt for testing.
I makes it through the digitalize document activity to and throws an exception at the Present Validation Station try catch block.

Error –
12/06/2019 12:14:01 => [Info] There is an exception
12/06/2019 12:14:01 => [Info] at UiPath.SmartData.ValidationStation.Host.Local.ValidationStationPresenter.d__5.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at UiPath.SmartData.ValidationStation.Host.Local.ValidationStationPresenter.d__3.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at UiPath.IntelligentOCR.Activities.ValidationStation.PresentValidationStation.d__24.MoveNext()
— End of stack trace from previous location where exception was thrown —
at UiPath.Shared.Activities.AsyncTaskCodeActivityImplementation.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
at UiPath.Shared.Activities.AsyncTaskCodeActivity.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

Any ideas would be appreciated, I’m hoping to get a feel for how to use ML to extract data through template less methods.

Thanks