Fatal error: Uncaught Error: Call to undefined function add_action() in /home/revoluti/public_html/wp-content/plugins/wp-simple-firewall/icwp-wpsf.php:42 Stack trace: #0 {main} thrown in /home/revoluti/public_html/wp-content/plugins/wp-simple-firewall/icwp-wpsf.php on line 42