I added MP front end plugin and receive this information.

I added MP front end plugin and receive this information.
http://lifetimecrafts.com
Warning: Cannot modify header information - headers already sent by (output started at /home3/jillian/public_html/lifetimecrafts.com/wp-admin/includes/template.php:1698) in /home3/jillian/public_html/lifetimecrafts.com/wp-includes/pluggable.php on line 896