Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /home/.sites/8/site7281296/web/wp-content/plugins/jetpack/modules/shortcodes/twitter-timeline.php:66
Stack trace:
#0 {main}
  thrown in /home/.sites/8/site7281296/web/wp-content/plugins/jetpack/modules/shortcodes/twitter-timeline.php on line 66