Hi Ajay,
Is it Excel shows this error when a formula or function contains numeric values that aren't valid. (If your Data block had reference to formula)
Reference error This often happens when you’ve entered a numeric value using a data type or a number format that’s not supported in the argument section of the formula.
Check on below link for solution
https://exceljet.net/formula/how-to-fix-the-num-error
Thanks,
Balaji