What occurs if the designer encounters an issue reading a sheet?

When a designer encounters an issue reading a sheet, it triggers a warning message to inform the user of the problem. This alert allows the user to understand that there's an issue with the specific sheet and take necessary actions, such as checking the file path, ensuring the sheet exists, or verifying permissions.

This warning is particularly important in data preparation and analysis workflows because it helps maintain data quality and accuracy by ensuring that any potential issues are brought to the user's attention rather than allowing the workflow to proceed unaffected. This feedback mechanism is crucial for maintaining effective data workflows, allowing for corrections to be made before continuing the analysis phase.