Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/andovercg/staging/wp-content/themes/astra/inc/lib/nps-survey/classes/nps-survey-script.php:28 Stack trace: #0 /var/www/andovercg/staging/wp-content/themes/astra/inc/lib/nps-survey/classes/nps-survey-script.php(39): Nps_Survey->__construct() #1 /var/www/andovercg/staging/wp-content/themes/astra/inc/lib/nps-survey/classes/nps-survey-script.php(507): Nps_Survey::get_instance() #2 {main} thrown in /var/www/andovercg/staging/wp-content/themes/astra/inc/lib/nps-survey/classes/nps-survey-script.php on line 28