This morning I had your plugin causing this error:
Fatal error: Cannot redeclare xmail() (previously declared in /home/*****/public_html/wp-includes/pluggable.php:1) in /home/*****/public_html/wp-includes/pluggable.php on line 1
I deactivated all plugins and reactivated all one by one. WP Security Audit Log was the only one that was causing the issue. I tried reinstalling as well. No go.