Fatal error: Uncaught Error: Call to undefined function add_action() in /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-admin-datatables.php:24 Stack trace: #0 /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-admin-datatables.php(18): GV_Extension_DataTables_Admin->initialize() #1 /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-admin-datatables.php(198): GV_Extension_DataTables_Admin->__construct() #2 {main} thrown in /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-admin-datatables.php on line 24