My Published Bot Refuses Give me the same result as the Studio version

new issue - Now that the previous one was resolved - I have a new problem where the UiPath Studio Bot runs just fine, while its Published UiPath Assistant version (no alterations were made after publishing), just ends up crashing within 40-50 seconds. It’s an error that sais “The source data has no rows or columns.” - but since I can’t replicate the crash in Studio - I can’t figure out the root of the problem.

Edit:
You know what - I’ll identify it by adding an extra spreadsheet for it to paste data into so that I know what the variables contain at each crucial stage of the Bot’s process.
As well as add Log messages for key locations. That’ll help me triangulate onto the root cause.