Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/tholic/training.stjohnkenya.org/wp-content/plugins/paid-memberships-pro/adminpages/reports/sales.php:23 Stack trace: #0 {main} thrown in /home/tholic/training.stjohnkenya.org/wp-content/plugins/paid-memberships-pro/adminpages/reports/sales.php on line 23