Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php:54
Stack trace:
#0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php(722): CrowdsignalShortcode->__construct()
#1 {main}
thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/crowdsignal.php on line 54