Process couldn't be completed because of error.UiPath.Core.SelectorNotFoundException: Could not find the UI element corresponding to this selector

Hi. I’m new to UiPath. Received a “Could not find the UI element corresponding to this selector” error message. The full message is below. This bot has been in production for a few months running fine. Being a newbie, just looking for a suggestion on the cause of the error and good starting point for debugging.

Thanks.

Bot [bot],
Input Arguments [{“in_yr_month”:“2021-06”}],
Job Id [83304220-3de9-4eca-80d9-85f29b8cbd9e],
Process couldn’t be completed because of error.UiPath.Core.SelectorNotFoundException: Could not find the UI element corresponding to this selector:
[1]
Search failed at selector tag:
[1]
The closest matches found are:
[86%]
at UiPath.Core.Activities.ScopeActivity.EndExecute(NativeActivityContext context, IAsyncResult result)
at UiPath.Core.Activities.ObsoleteAsyncNativeActivity.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)
— End of stack trace from previous location where exception was thrown —
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at UiPath.Executor.BaseRunner.EndExecute(IAsyncResult result)
at UiPath.Executor.InProcessRunner.EndExecute(IAsyncResult result)
at UiPath.Core.Activities.ExecutorInvokeActivity.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager) Please try running the process again!

Hey @UiBot1 ,

Thank you for filing this, would it be possible to provide us more information about the task that is triggering this error? What activity is causing it?

Thanks,
Raluca