Fatal error: Uncaught Error: Call to undefined function add_action() in /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-coming-soon-maintenance/includes/class-ccsm-customizer.php:9 Stack trace: #0 /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-coming-soon-maintenance/includes/class-ccsm-customizer.php(583): CCSM_Customizer->__construct() #1 {main} thrown in /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-coming-soon-maintenance/includes/class-ccsm-customizer.php on line 9