Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /home/kacperg/public_html/kacpergr/wp-content/plugins/jetpack/modules/shortcodes/quiz.php:71 Stack trace: #0 /home/kacperg/public_html/kacpergr/wp-content/plugins/jetpack/modules/shortcodes/quiz.php(312): Quiz_Shortcode::init() #1 {main} thrown in /home/kacperg/public_html/kacpergr/wp-content/plugins/jetpack/modules/shortcodes/quiz.php on line 71