Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/noteswp.new/wp-content/plugins-backup/netbase_solutions/core/modules/price-matrix/inc/admin.php:9 Stack trace: #0 /var/www/noteswp.new/wp-content/plugins-backup/netbase_solutions/core/modules/price-matrix/inc/admin.php(526): NBT_PriceMatrix_Admin->__construct() #1 {main} thrown in /var/www/noteswp.new/wp-content/plugins-backup/netbase_solutions/core/modules/price-matrix/inc/admin.php on line 9