Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/clmepl5/public_html/web/app/plugins/gravityview/includes/class-admin-approve-entries.php:40 Stack trace: #0 /home/clmepl5/public_html/web/app/plugins/gravityview/includes/class-admin-approve-entries.php(32): GravityView_Admin_ApproveEntries->add_hooks() #1 /home/clmepl5/public_html/web/app/plugins/gravityview/includes/class-admin-approve-entries.php(646): GravityView_Admin_ApproveEntries->__construct() #2 {main} thrown in /home/clmepl5/public_html/web/app/plugins/gravityview/includes/class-admin-approve-entries.php on line 40