title: Error In "public_html/blog/wp-includes/pluggable.php on line 876"
body: <p>I got this error in my site when I call this url www.website.com/blog/wp-admin :</p>
  
  <blockquote>
    <p>Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/public_html/blog/wp-content/themes/theme-name/functions.php:2102) in /home/xxx/public_html/blog/wp-includes/pluggable.php on line 876</p>
  </blockquote>