Fatal error: Uncaught Error: Call to undefined function add_action() in /home/theinsightpartne/public_html/blog/wp-content/themes/twentysixteen/inc/customizer.php:61 Stack trace: #0 {main} thrown in /home/theinsightpartne/public_html/blog/wp-content/themes/twentysixteen/inc/customizer.php on line 61