Can't login to admin

Hi,

My site has been working fine for years and today whwn I tried to login I see this at the top of the page

define( ‘WPCACHEHOME’, ‘/home2/ruleof72/public_html/marksphotographyspot.com/wp-content/plugins/wp-super-cache/’ ); //Added by WP-Cache Manager
Warning: Cannot modify header information – headers already sent by (output started at /home2/ruleof72/public_html/marksphotographyspot.com/wp-config.php:2) in /home2/ruleof72/public_html/marksphotographyspot.com/wp-login.php on line 415

Warning: Cannot modify header information – headers already sent by (output started at /home2/ruleof72/public_html/marksphotographyspot.com/wp-config.php:2) in /home2/ruleof72/public_html/marksphotographyspot.com/wp-login.php on line 427

I can go to the front end and see the pages, posts, etc. but I have this at the top of the page:

define( ‘WPCACHEHOME’, ‘/home2/ruleof72/public_html/marksphotographyspot.com/wp-content/plugins/wp-super-cache/’ ); //Added by WP-Cache Manager

I’ve tried clearing browser cache, cookies, etc. as well as deactivating plugins through cPanel and am still getting the error.

Any help correcting this would be most appreciated!