Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /nfs/aesop1/hw00/d93/covid19prevention/wordpress/wp-content/themes/covid-19-prevention-trial/inc/covid19prevention-functions.php:22 Stack trace: #0 {main} thrown in /nfs/aesop1/hw00/d93/covid19prevention/wordpress/wp-content/themes/covid-19-prevention-trial/inc/covid19prevention-functions.php on line 22