Fatal error: Uncaught Error: Call to undefined function add_action() in /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/affiliate-wp/includes/admin/tools/import/import.php:53 Stack trace: #0 {main} thrown in /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/affiliate-wp/includes/admin/tools/import/import.php on line 53