Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wordads/php/class-wordads-cron.php:21
Stack trace:
#0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wordads/php/class-wordads-cron.php(53): WordAds_Cron->__construct()
#1 {main}
thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wordads/php/class-wordads-cron.php on line 21