Internal error when navigating to webview

I’m currently implemententing a testcase on a hybrid android app.
All the steps I’ve implemented so far are working. With the last ‘tap’ I navigate to a webview page. I do not yet perform any actions there so the process is the succesfully finished. It also shows me so in the Text Explorer.
But at the moment that the webview is shown on the screen, i get the following error:
Details are saying this:

Error: System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
   at System.Collections.Generic.List`1.Enumerator.MoveNext()
   at UiPath.Shared.Extensions.CollectionExtensions.AddRange[T](ICollection`1 collection, IEnumerable`1 range)
   at UiPath.Studio.Plugin.Workflow.Testing.DescriptorCoverage.DescriptorCoverageService.ComputeCoverage(String relativePath, IReadOnlyCollection`1 workflowObjectReferences, WorkflowExecutionData workflowExecution, Boolean isTestCase)
   at UiPath.Studio.Plugin.Workflow.Testing.DescriptorCoverage.DescriptorCoverageService.AddToCoverageCache(List`1 workflows, Boolean isTestCase)
   at UiPath.Studio.Plugin.Workflow.Testing.DescriptorCoverage.DescriptorCoverageService.OnExecutionDataAvailable()
   at UiPath.Studio.Plugin.Workflow.Testing.ActivityCoverage.ActivityCoverageShellService.ExecutionManagerService_ExecutionStateChanged(Object sender, ExecutionStateChangedEventArgs e)
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler), HResult -2146233079

If I click on ‘Later’ I can use UiPath withouth any limitations. Does anyone know, why there is a internal error?


  • UiPath Studio 2022.4.4
  • Physical Device Galaxy A53 5G
  • Android 12
  • Windows 10
  • Appium Desktop 1.22.3-4