I cannot log on to my back end of my website. This is what I keep getting and I check my cookies and they are not blocked. Please help!
Warning: Cannot modify header information – headers already sent by (output started at /home/fulle5/public_html/wp-includes/shortcodes.php:1) in /home/fulle5/public_html/wp-login.php on line 425
Cookies are blocked due to unexpected output.
