returns empty string if user doesn't exit
returns empty string if user doesn't exit

nikhil93uf/Spika-Server,nikhil93uf/Spika-Server,cloverstudio/Spika-Server,cloverstudio/Spika-Server,nikhil93uf/Spika-Server,velibor123/Spika-Server-Test,cloverstudio/Spika-Server,velibor123/Spika-Server-Test