Fatal error: Uncaught Error: Call to undefined function add_action() in /home/FeRRKNG/public_html/szkolazs1mm/wordpress/wp-content/plugins/hello.php:69 Stack trace: #0 {main} thrown in /home/FeRRKNG/public_html/szkolazs1mm/wordpress/wp-content/plugins/hello.php on line 69