Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/quiz.php:82
Stack trace:
#0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/quiz.php(364): Quiz_Shortcode::init()
#1 {main}
thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/shortcodes/quiz.php on line 82