Fatal error: Uncaught Error: Call to undefined function add_action() in /home/kamarele/arefproje.com/wp-content/themes/appointment-red/functions/customizer/customizer-header-layout.php:94 Stack trace: #0 {main} thrown in /home/kamarele/arefproje.com/wp-content/themes/appointment-red/functions/customizer/customizer-header-layout.php on line 94