'username' field isn't showing up data in the output

Hey!! It is no doubt a very useful script and thanks for sharing this but the username field contains no data in the output file. Can you please tell me the way to turn this feature on somehow.
i.e.
username;date;retweets;favorites;text;geo;mentions;hashtags;id;permalink
;2017-02-24 13:07;0;0;"Trumponomics and the S&P 500 http:// ift.tt/2mgfUtD";;;;"835234730438197248";https://twitter.com/FGoria/status/835234730438197248

This behavior remains the same either while searching with a specific username or with a querysearch or with both together.