Better error message for null value in TabSeparated format

Why it matters

This feature addresses the issue of unclear or insufficient error messages related to null values encountered during data processing with the TabSeparated format. It helps users quickly identify and understand problems caused by null values, improving debugging and data handling efficiency.

How to use it

When importing or working with data in the TabSeparated format, users will automatically benefit from clearer and more informative error messages related to null values without needing to change any configuration.