Please anyone check my .XAML file, I am getting an exception

Readcsv (1).xaml (62.8 KB)
pwdexcel.xlsx (28 KB)

The Value which you are assigning is null.Kindly validate your data

Where i have to assign a value? If u don’t mind can you fix this in my workflow?Please

create output variable for get environment folder which is null now

But i used the same concept in different project at that time it was working fine.