Help! While adding Facebook Open Graph Meta code (http://www.wpbeginner.com/wp-themes/how-to-add-facebook-open-graph-meta-data-in-wordpress-themes/) to my functions.php file, I locked myself out completely and I receive this error message (http://reasonandfolly.com/wp-login.php). It appears I already had an active plugin doing the same and it was not deactivated prior to adding this code. I cannot login to switch it off! Is there a way out?