"RPA UI-path" windows session lock error

Need help from "RPA UI-path" expert for solving "windows session lock error"
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Click 'unchecked': Could not find the user-interface (UI) element for this action.

Possible solutions:
• Ensure application is opened and the UI element is visible on the screen at execution time
• Edit the Target of the UI activity and use Validation to debug the issue.
• If needed, re-indicate the element as its properties might have changed

• Use "Check state" activity to check the application state before executing the action
• Increase the "Delay before" value to allow time to the application to render entirely and become responsive