Misleading error message when the column name in schema rule does not exist in the CSV file.

[sparkhi]

Consider a CSVS file with a rule
department: is("XYZ") and in($filepath)

and a CSV file with data as:

batch_code,department,held_by,file_path
XYZ32Y24S000,XYZ,"The National Archives, Kew",file:///XYZ_32/content/1/2/3/4/

The error you get is
Error: java.util.NoSuchElementException: None.get

Ideally, the error should indicate something on the lines of "The column 'filepath' cannot be found in the CSV file" which will help the user immediately figure out what went wrong