Fatal error: Uncaught Error: Call to undefined function add_action() in /home/okok/public_html/andzejkulak/sydney/inc/onboarding/plugins/class-sydney-recommended-plugins.php:30 Stack trace: #0 /home/okok/public_html/andzejkulak/sydney/inc/onboarding/plugins/class-sydney-recommended-plugins.php(163): Sydney_Recommended_Plugins->__construct() #1 {main} thrown in /home/okok/public_html/andzejkulak/sydney/inc/onboarding/plugins/class-sydney-recommended-plugins.php on line 30