Warning: Cannot modify header information – headers already sent by (output started at /home/rayg1/public_html/dogtraining/wp-content/plugins/tubepress/classes/net/php/pear/HTTP/Request2/Adapter.class.php:297) in /home/rayg1/public_html/dogtraining/wp-includes/pluggable.php on line 865
The solution is just delete this plugin ” tubepress”
i have applied the solution my self and fixed the issue.
Thank you.