Help with site error! Site down!! Urgent!
I have a Problem with my site it was working fine till this morning and now I have an error which is this :
Warning: Cannot modify header information - headers already sent by (output started at /home/maltalis/public_html/e-tickles.com/index.php:1) in /home/maltalis/public_html/e-tickles.com/wp
-includes/pluggable.php on line 866
Can anyone help me! and tell me what I need to do to fix it.