Fatal error: Uncaught Error: Call to undefined function add_action() in /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-datatables-migrate.php:18 Stack trace: #0 /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-datatables-migrate.php(97): GV_Extension_DataTables_Migrate->__construct() #1 {main} thrown in /home/duvadmin/assessment.downundervisa.com/wp-content/plugins/gravityview-datatables/includes/class-datatables-migrate.php on line 18