Fatal error: Uncaught Error: Call to undefined function add_action() in /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-404-customizer/includes/class-cnfp-customizer.php:9
Stack trace:
#0 /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-404-customizer/includes/class-cnfp-customizer.php(513): CNFP_Customizer->__construct()
#1 {main}
thrown in /home/kacperg/public_html/kacpergr/wp-content/plugins/colorlib-404-customizer/includes/class-cnfp-customizer.php on line 9