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ViliBit
Advocate II
Advocate II

Fail to capture image on Take screenshot of a webpage action

 

I am using a flow where, in some point,  I use the "Take screenshot of a webpage" action, with the "Capture:Specific element" option. The problem is that for some time, the flow has been randomly stuck in that step with "failed to capture image" error.
Sometimes it crashes after 5 - 10 screenshots, other times immediately after running. I made multiple selectors of that UI element but in vain.

I don't get it. I have the "Wait for web page content" before, with the same UI element and flow is passes with no error.

I reinstalled PAD and Firefox add-on (I am using Firefox browser) but no results.

 

Any insight will be appreciated. Thanks!

 

 

Errors message:

 

Microsoft.Flow.RPA.Desktop.Modules.SDK.ActionException: Failed to capture image. ---> PInvoke.Win32Exception: Invalid window handle
at PInvoke.User32.GetWindowPlacement(IntPtr hWnd)
at Microsoft.Flow.RPA.Desktop.UIAutomation.Core.Native.Window.WANativeWindow.<>c__DisplayClass67_0.<BringToFront>b__1()
at Microsoft.Flow.RPA.Desktop.UIAutomation.Core.Utilities.Clock.Execute[T](Int64 maxMillisecondsToWait, Int32 step, Func`1 action, Func`2 successCondition)
at Microsoft.Flow.RPA.Desktop.UIAutomation.Core.Native.Window.WANativeWindow.BringToFront(Boolean ensureForegroundStatus, Boolean useWindowStateHacks, Int32 timeout)
at Microsoft.Flow.RPA.Desktop.UIAutomation.WebAutomation.Core.Browser.AutomationBrowserBase.EnsureWindowIsVisible(INativeWindow waNativeWindow)
at Microsoft.Flow.RPA.Desktop.UIAutomation.WebAutomation.Core.WebExtensionsBrowser.WebExtensionsBrowserBase.CaptureWebPageImage(Single scaling, Int32 tryCount)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntime.TakeScreenshotOfWebPage(IWebAutomationBrowser webExtensionsBrowser, String cssSelectorOfElementToCapture, WebPageImageCapturingOperationEnum webPageImageCapturingOperation)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationActions.TakeScreenshotOfWebPage(IWebBrowserInstanceFacade webBrowserInstance, String cssSelectorOfElementToCapture, String fileName, Int32 webPageImageCapturingOperation, Boolean copyToClipboard, Int32 fileFormat)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.TakeScreenshotBase.Execute(ActionContext context)
--- End of inner exception stack trace ---
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.TakeScreenshotBase.Execute(ActionContext context)
at Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)

 

Error actionError action

 

 

 

Action settingsAction settings

 

 

7 REPLIES 7
ViliBit
Advocate II
Advocate II

Still banging my head ....

What does "Exception: Invalid window handle" mean??

I had similar issue with same error msg few releases ago, when PAD changed the way handle was stored in a variable, let me see my email to MS support

 

This, but it was affecting my flows when i moved to 2.18, and had no issues with this with several latest releases

 

momlo_0-1664528710356.png

 

ViliBit
Advocate II
Advocate II

Two versions later and the problem still persists. I was hoping that with the newer update the problem will be solved. But the problem is still here.

It is the only thing that ruins what could have been a beautiful flowing flow!!!

bogdantudose
Frequent Visitor

I have the same issue. Waiting for a fix

TengkuMaestro
Frequent Visitor

any update about the issue? i am facing the same issue with my flow

matrix187
Frequent Visitor

I am experiencing the same issue as well. I will disable the action for now and wait and see I guess.

Any solution for this error so far? I am facing similiar error.

Correlation Id: 39d2045c-3ab8-477c-893b-fb95b35f39ef

Parameter is not valid.: Microsoft.Flow.RPA.Desktop.Modules.SDK.ActionException: Failed to capture image. ---> System.ArgumentException: Parameter is not valid.
   at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
   at Microsoft.Flow.RPA.Desktop.UIAutomation.WebAutomation.Core.WebExtensionsBrowser.WebExtensionsBrowserBase.CaptureWebPageImage(Single scaling, Int32 tryCount)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.WebAutomationRuntime.TakeScreenshotOfWebPageImpl(IWebAutomationBrowser webExtensionsBrowser, String cssSelectorOfElementToCapture, WebPageImageCapturingOperationEnum webPageImageCapturingOperation)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.WebAutomationRuntime.TakeScreenshotOfWebPage(IWebAutomationBrowser webBrowserInstance, String cssSelectorOfElementToCapture, String fileName, Int32 webPageImageCapturingOperation, Boolean copyToClipboard, Int32 fileFormat)
   at Microsoft.Flow.RPA.Desktop.UIAutomation.AutomationServer.Host.WebAutomationRuntimeService.<>c__DisplayClass29_0.<TakeScreenshotOfWebPage>b__0(IWebAutomationBrowser b)
   at Microsoft.Flow.RPA.Desktop.UIAutomation.AutomationServer.Host.WebAutomationRuntimeService.<>c__DisplayClass31_0.<GetBrowserAndExecute>b__0(IWebAutomationBrowser b)
   at Microsoft.Flow.RPA.Desktop.UIAutomation.AutomationServer.Host.WebAutomationRuntimeService.GetBrowserAndExecute[T](Func`2 action, WebBrowserInfo browserInfo)
--- End of remote exception stack trace ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Flow.RPA.Desktop.UIAutomation.Shared.Rpc.RpcDispatchProxy`1.GetRemoteResultOrThrow(RemoteMethodCallResponse response, Type expectedResultType)
   at Microsoft.Flow.RPA.Desktop.UIAutomation.Shared.Rpc.RpcDispatchProxy`1.Invoke(MethodInfo targetMethod, Object[] args)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Reflection.DispatchProxyGenerator.Invoke(Object[] args)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.<>c__DisplayClass30_0.<TakeScreenshotOfWebPage>b__0(IWebAutomationRuntimeService s)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.<>c__DisplayClass32_0.<ExecuteSafe>b__0(IWebAutomationRuntimeService s)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.ExecuteSafe[T](Func`2 action, TimeSpan timeout)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.ExecuteSafe(Action`1 action, TimeSpan timeout)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.TakeScreenshotBase.<Execute>b__21_0(IWebAutomationRuntimeService s)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationActionBase.<>c__DisplayClass4_0.<PerformWebAutomationWithLogging>b__0(IWebAutomationRuntimeService s)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationActionBase.PerformWebAutomationWithLogging[T](Func`2 action, WebAutomationRuntimeLogData requestData, Func`3 resultData)
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.TakeScreenshotBase.Execute(ActionContext context)
   --- End of inner exception stack trace ---
   at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.TakeScreenshotBase.Execute(ActionContext context)
   at Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)

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