Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/mode/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php:56 Stack trace: #0 /var/www/mode/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php(731): CrowdsignalShortcode->__construct() #1 {main} thrown in /var/www/mode/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php on line 56