Fatal error: Uncaught Error: Call to undefined function add_action() in /home/bdses/public_html/wp-content/themes/twentysixteen-child/inc/custom-field-mobile-app.php:202 Stack trace: #0 {main} thrown in /home/bdses/public_html/wp-content/themes/twentysixteen-child/inc/custom-field-mobile-app.php on line 202