Error Message When Logging In….Help!!!

This is my url: http://myhallofshame.com
Below is the error message i get. I tried adding additional sidebars and and after adding the short coding i got online,now i cant log in to my site. How do i fix this…any help will be appreciated. Thanks!

“Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-login.php on line 354

Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-login.php on line 366

Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-includes/pluggable.php on line 693

Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-includes/pluggable.php on line 694

Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-includes/pluggable.php on line 695

Warning: Cannot modify header information – headers already sent by (output started at /home/content/83/7290983/html/wp-content/themes/shame-bp-v1/functions.php:555) in /home/content/83/7290983/html/wp-includes/pluggable.php on line 897″