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Cant find UI element in web page unless another browser instance is open.

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Posted on by Ask_Harry

I am using PAD on a web page to navigate, extract and insert data. The web page is built using iFrames. I'm finding that when I run the flow for the first time (no other browser instances open), I get the error "Cant find UI element on web page". However, if I dont close that instance, and run the flow again, the flow runs successfully.

1) Run the flow the first time which opens a browser instance (chrome)

2) Get the error "Cant find UI element in web page"

3) Run the flow again without shutting down the previous browser instance which opens a new instance

4) Flow runs successfully

5) Close all browser instances

6) Run the flow again

7) Get the error again "Cant find UI element on web page"

Any ideas ?

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Power Automate Desktop

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Ask_Harry 33 on at

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Actually, here is the full error message.

Correlation Id: 07c30396-7312-43e2-bfac-07e811dd70c4
Connection is not available for frame: 29.: Microsoft.PowerPlatform.PowerAutomate.Desktop.Actions.SDK.ActionException: Click link on web page failed. ---> Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.Exceptions.WebScriptGeneralException: Connection is not available for frame: 29.
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.WebAutomationResultExtensions.UnWrap[T](WebExecutionResult`1 result, String cssSelector, String option)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.Proxy.LocalWebAutomationRuntime.ClickLinkOnWebPage(WebBrowserInfo webBrowserInfo, String cssSelectorOfElementToClick, String dialogButtonToPress, Boolean waitForPageToLoad, TimeSpan waitForPageToLoadTimeout, Int32 courseOfActionIfDialogAppears, Boolean physicalMouseClick, ClickType clickType, RectangleEdgePoint mousePositionRelativeToElement, Int32 offsetX, Int32 offsetY)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Common.Proxy.WebAutomationRuntimeRouter.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 generatedProxy_3.ClickLinkOnWebPage(WebBrowserInfo , String , String , Boolean , TimeSpan , Int32 , Boolean , ClickType , RectangleEdgePoint , Int32 , Int32 )
--- 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 generatedProxy_1.ClickLinkOnWebPage(WebBrowserInfo , String , String , Boolean , TimeSpan , Int32 , Boolean , ClickType , RectangleEdgePoint , Int32 , Int32 )
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.<>c__DisplayClass7_0.<ClickLinkOnWebPage>b__0(IWebAutomationRuntime s)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationRuntimeServiceProxy.<>c__DisplayClass34_0.<ExecuteSafe>b__0(IWebAutomationRuntime 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.WebAutomationRuntimeServiceProxy.ClickLinkOnWebPage(WebBrowserInfo webBrowserInfo, String cssSelectorOfElementToClick, String dialogButtonToPress, Boolean waitForPageToLoad, TimeSpan waitForPageToLoadTimeout, Int32 courseOfActionIfDialogAppears, Boolean physicalMouseClick, ClickType clickType, RectangleEdgePoint mousePositionRelativeToElement, Int32 offsetX, Int32 offsetY)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.ClickBase.<Execute>b__37_0(IWebAutomationRuntime s)
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.WebAutomationActionBase.<>c__DisplayClass4_0.<PerformWebAutomationWithLogging>b__0(IWebAutomationRuntime 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.ClickBase.Execute(ActionContext context)
--- End of inner exception stack trace ---
at Microsoft.Flow.RPA.Desktop.Modules.WebAutomation.Actions.ClickBase.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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Ask_Harry 33 on at

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I found the issues.
1) The UI Element selection tool was including a source "Src" which was pointing to a specific instance of the browser. When I deleted and tested that in a different browser instance, it worked.
2) I was waiting for "Text in Window" instead of "UI Element in Window".
Using both of these fixes the problem.

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