Error on regression analysis

Hello everyone,

I want to perform a regression analysis on my survey data, but I keep getting this error message: “Regression - The RGP() function returns an error value. Check the input ranges.” I’ve since figured out that it’s due to a specific row, but I couldn’t find any incorrect numbers, letters, or anything else in it that would trigger this message. Does anyone know what might be causing this and how I can fix the problem? 

Thanks in advance!