I'm getting this error message. Please help. Warning:

I'm getting this error message. Please help.

Warning: Cannot modify header information - headers already sent by (output started at /home/noturoadmin/public_html/SyriacMusicInstitute/index.php(5) : assert code(1) : eval()'d code:1) in /home/noturoadmin/public_html/SyriacMusicInstitute/wp-content/plugins/wpclef/includes/lib/wp-session/class-wp-session.php on line 124