Read PDF With OCR: Expression Activity type 'VisualBasicValue`1' requires compilation in order to run. Please ensure that the workflow has been compiled

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1

Hey all, having this issue while working in C# and have been banging my head against the wall for 2 hours, and ideas?

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FileLocation = “Y:\Applications\RPA\Developers\Repository\German\NFY.pdf”

Properties:
image

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image747×378 30.1 KB

And full error log:

RemoteException wrapping System.NotSupportedException: Expression Activity type 'VisualBasicValue1' requires compilation in order to run. Please ensure that the workflow has been compiled. at System.Activities.Expressions.CompiledExpressionInvoker.InvokeExpression(ActivityContext activityContext) at Microsoft.VisualBasic.Activities.VisualBasicValue1.Execute(CodeActivityContext context)
at System.Activities.CodeActivity1.InternalExecuteInResolutionContext(CodeActivityContext context) at System.Activities.Runtime.ActivityExecutor.ExecuteInResolutionContext[T](ActivityInstance parentInstance, Activity1 expressionActivity)
at System.Activities.InArgument1.TryPopulateValue(LocationEnvironment targetEnvironment, ActivityInstance activityInstance, ActivityExecutor executor) at System.Activities.RuntimeArgument.TryPopulateValue(LocationEnvironment targetEnvironment, ActivityInstance targetActivityInstance, ActivityExecutor executor, Object argumentValueOverride, Location resultLocation, Boolean skipFastPath) at System.Activities.ActivityInstance.InternalTryPopulateArgumentValueOrScheduleExpression(RuntimeArgument argument, Int32 nextArgumentIndex, ActivityExecutor executor, IDictionary2 argumentValueOverrides,
Location resultLocation,
Boolean isDynamicUpdate)
at System.Activities.ActivityInstance.ResolveArguments(ActivityExecutor executor,
IDictionary`2 argumentValueOverrides,
Location resultLocation,
Int32 startIndex)
at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor,
BookmarkManager bookmarkManager,
Location resultLocation)
— End of stack trace from previous location —
at UiPath.PDF.Activities.OcrReader.ProcessAsync()
at UiPath.PDF.Activities.ReadWithOCRBase.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)

It compiles fine at runtime with no issues, issue only comes up when running flow.

2

@David_Hernandez2

This might happen because of double quote
Can you check if any double quotes are turned as ” If so replace that with regular "

Hope this may help you

Thanks,
Srini

1 Like
3

Yes that is the first thing I checked due to the other forum posts, but they are all correct.

4

Hi @David_Hernandez2 ,

Refer the following thread, the issue seems to be same:

Regards,

1 Like
5

also, check that the variable FileLocation is correctly declared. Maybe also delete it and retype it into the field

6

Fixed by placing it into it’s own workflow and invoking it… seems to bug out when other activities are in the same xaml file.

1 Like
7

@David_Hernandez2 Glad that you have figured it.

Cheers,

8

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