Problem with Local OCR in Virtual Box

[Julian3 (Julian /&/)]

Hello i’m trying to use local OCR in an Virtual machine which is windows 10.
I activated avx2 instruction set.
The same workflow runs fine in my local pc
But when I try to execute UiPath document OCR with flag local on my virtual machine I get the following Error:

Info Input language:auto, translated language:auto

16:09:13.5109 Error Failed to load assembly: du_ocr_wrapper, Version=1.0.8496.18540, Culture=neutral, PublicKeyToken=null.
16:09:17.5439 Error Error running OCR
16:09:17.5659 Fatal

I tried to reinstall UiPath studio and reinstall also all dependencies.

Other OCR engines like Tesseract are working fine

Is there anybody who can help?

[Anil_G (Anil Gorthi)]

@Julian3

Please download the required pckage

https://docs.uipath.com/activities/other/latest/user-guide/ui-path-document-ocr

Cheers

[Julian3 (Julian /&/)]

Hi i already installed the right package and it is runnimg correctly on my local machine, but not in the vm

[Anil_G (Anil Gorthi)]

@Julian3

Error Failed to load assembly: du_ocr_wrapper

@Julian3

Lloks like on the vm it is unable to download the packages…copy the packages fromyour local to vma nd check if it works

Packages will be in %userprofile%\.nuget\packages

Cheers

[Julian3 (Julian /&/)]

I already copied my whole nuget file from my local machine where it works to the vm but still faces the same error

When i look in my packages the du_ocr_wrapper file is available

[Anil_G (Anil Gorthi)]

@Julian3

Error Failed to load assembly: du_ocr_wrapper

@Julian3

When you performed reinstallation did you happen to uninstall everything and remove alld ependencies of UiPath and reinstalled?

Could not load file or assembly 'UiPath.Activities.RuntimeGovernance

Thank you for providing me with the extra files. Unfortunately, indicating an element from the Attach Browser activity did not cause any errors for me Could you maybe do these steps to clean your environment a bit: Close Studio kill the UiPath processes in the task manager clear (or simply rename) these paths with temporary cache files%USERPROFILE%\.nuget %LOCALAPPDATA%\UiPath\.cache %LOCALAPPDATA%\NuGet %LOCALAPPDATA%\Temp\NuGetScratch %LOCALAPPDATA%\Temp\nuget start Studio and …

Cheers

[Julian3 (Julian /&/)]

Yes i deleted UiPath and deleted all packages in .nuget

[Anil_G (Anil Gorthi)]

@Julian3

Can you open the exception details from locals page and check the detailed exception that might give more info

Cheers

[Julian3 (Julian /&/)]

sure this is the full error

RemoteException wrapping System.AggregateException: One or more errors occurred. (Request CorrelationId: f07e5922-a4fb-4c86-8ca6-6a26cc071ea9
Request PredictionId: CC5GpUhe0JfydKUeBvpr1138XCDrxDcfet9GSWV0LCo=_45fac9a3-cae0-42dd-8f23-f8ff617b2f39
Error performing OCR: Die Datei oder Assembly “du_ocr_wrapper,
Version=1.0.8496.18540,
Culture=neutral,
PublicKeyToken=null” oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden. UiPathOCRErrorRunningEngine) —> RemoteException wrapping UiPath.Shared.Activities.TrackingException: Request CorrelationId: f07e5922-a4fb-4c86-8ca6-6a26cc071ea9
Request PredictionId: CC5GpUhe0JfydKUeBvpr1138XCDrxDcfet9GSWV0LCo=_45fac9a3-cae0-42dd-8f23-f8ff617b2f39
Error performing OCR: Die Datei oder Assembly “du_ocr_wrapper,
Version=1.0.8496.18540,
Culture=neutral,
PublicKeyToken=null” oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden. UiPathOCRErrorRunningEngine —> RemoteException wrapping System.Exception: Error performing OCR: Die Datei oder Assembly “du_ocr_wrapper,
Version=1.0.8496.18540,
Culture=neutral,
PublicKeyToken=null” oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden. UiPathOCRErrorRunningEngine —> RemoteException wrapping UiPath.Vision.OCR.OCRException: Die Datei oder Assembly “du_ocr_wrapper,
Version=1.0.8496.18540,
Culture=neutral,
PublicKeyToken=null” oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden. UiPathOCRErrorRunningEngine —> RemoteException wrapping System.IO.FileNotFoundException: Die Datei oder Assembly “du_ocr_wrapper,
Version=1.0.8496.18540,
Culture=neutral,
PublicKeyToken=null” oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann die angegebene Datei nicht finden.
bei UiPath.DocumentUnderstanding.OCR.LocalServer.DocumentOcrExternalLsEngine.RunOcr(Bitmap image,
Int32 numberOfThreads)
bei UiPath.OCR.Core.LSDocumentOCREngine.RecognizeAsync(CancellationToken ct)
bei UiPath.Vision.OCR.Engine.BaseEngine.d__20.MoveNext()
— End of inner exception stack trace —
bei UiPath.Vision.OCR.Engine.BaseEngine.d__20.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.Vision.Core.OcrEngineRunner.d__0.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.Vision.Host.Service.HostServiceWithRefContext.d__5.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.CoreIpc.Server.d__22.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.CoreIpc.Server.d__21.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.CoreIpc.Server.<>c__DisplayClass4_2.<<-ctor>b__6>d.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.CoreIpc.IOHelpers.d__13.MoveNext()
— Ende der Stapelüberwachung vom vorhergehenden Ort,
an dem die Ausnahme ausgelöst wurde —
bei System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei UiPath.CoreIpc.IOHelpers.d__191.MoveNext() --- End of inner exception stack trace --- at UiPath.Vision.VisionClient.ScrapeAsync(OCRInput input, CancellationToken ct) at UiPath.OCR.Core.Core.OCRScraper.ScrapeOCRAsync(Image image, OCROptions options, CancellationToken cancellationToken) at UiPath.OCR.Activities.UiImage.ScrapeOCRAsync(OCROptions options, CancellationToken cancellationToken) at UiPath.OCR.Activities.OCRBase.ScrapeWithOptionsAsync(Image image, OCROptions ocrOptions, CancellationToken ct) at UiPath.OCR.Activities.UiPathDocumentOCR.ScrapeWithOptionsAsync(Image image, OCROptions ocrOptions, CancellationToken ct) at UiPath.OCR.Activities.OCRBase.PerformOCRAsync(Image image, Dictionary2 options,
CancellationToken ct)
— End of inner exception stack trace —
at UiPath.OCR.Contracts.Activities.OCRAsyncCodeActivity.EndExecute(AsyncCodeActivityContext context,
IAsyncResult result)
at System.Activities.AsyncCodeActivity`1.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context,
IAsyncResult result)
at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor,
BookmarkManager bookmarkManager)
— End of stack trace from previous location —
at UiPath.IntelligentOCR.Digitization.ExtendedOcrEngineActivityWrapper.RunOcr(Bitmap bitmap,
CancellationToken token)
at UiPath.IntelligentOCR.Digitization.ExtendedOcrEngineActivityWrapper.Execute(PageRendererResults renderedPage,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.RunOcr(IOcrEngine ocrEngine,
PageRendererResults renderedPage,
String documentId,
CancellationToken token)
— End of inner exception stack trace —
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.ApplyOcr(CachingPageRenderer renderer,
IOcrEngine ocrEngine,
DigitizationSettings settings,
String contentId,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.ProcessPageWithOcr(Content page,
IOcrEngine ocrEngine,
DigitizationSettings settings,
String contentId,
CachingPageRenderer renderer,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.ProcessPdfPageWithAuto(Content page,
IOcrEngine ocrEngine,
DigitizationSettings settings,
String contentId,
CachingPageRenderer renderer,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.GetRawPage(Content page,
IOcrEngine ocrEngine,
Boolean shouldApplyOcr,
DigitizationSettings settings,
String contentId,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.PageDigitizer.ProcessPage(IDigitizationDocument digitizationDocument,
Int32 pageNumber,
IOcrEngine ocrEngine,
Boolean shouldApplyOcr,
DigitizationSettings settings,
String contentId,
CancellationTokenSource source)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.DocumentDigitizer.GetPages(Content content,
DigitizationSettings settings,
IOcrEngine ocrEngine,
CancellationToken token)
at UiPath.DocumentUnderstanding.Digitizer.Digitization.DocumentDigitizer.Digitize(Content content,
DigitizationSettings settings,
IOcrEngine ocrEngine,
CancellationToken token)
at UiPath.IntelligentOCR.Digitization.IntelligentOcrDigitizer.Digitize(Content content,
IOcrEngine ocrEngine,
ApplyOcrOnPdf applyOcrOnPdf,
Boolean detectCheckboxes,
IDigitizationScheduler scheduler,
IDigitizerTelemetryService telemetryService,
CancellationToken token)
at UiPath.IntelligentOCR.Activities.Digitization.DigitizeDocument.ExecuteAsync(NativeActivityContext context,
CancellationToken cancellationToken)
at UiPath.Shared.Activities.AsyncTaskNativeImplementation.BookmarkResumptionCallback(NativeActivityContext context,
Object value)
at UiPath.Shared.Activities.AsyncTaskNativeActivity.BookmarkResumptionCallback(NativeActivityContext context,
Bookmark bookmark,
Object value)
at System.Activities.Runtime.BookmarkCallbackWrapper.Invoke(NativeActivityContext context,
Bookmark bookmark,
Object value)
at System.Activities.Runtime.BookmarkWorkItem.Execute(ActivityExecutor executor,
BookmarkManager bookmarkManager)

[Anil_G (Anil Gorthi)]

@Julian3

Can you please confirm the below and then try

Cheers

[Julian3 (Julian /&/)]

Yeah i double checked that avx2 is enabled in vm.
I deactivated and activated it but still got the same error

[Julian3 (Julian /&/)]

I found the error.
You were right it was due to avx2

It was activated but was not working.
I checked it with the tool HWinfo.

To work properly i first had to disable hyper-v on my host-machine.

Now it works.
Many Thanks!