'Internal : End of subsheet without corresponding start' in blue prism

Question

I encountered an error 'Internal : End of subsheet without corresponding start' in blue prism after stepping the end stage in process studio,can anyone knows what the error means and when it comes?

Answer 1

I will suggest you to reset but for reference this happens when BP "gets lost" after the end of a page because it was not directed to the page using a Page Reference stage to begin with.