Fatal error: Uncaught Error: Call to undefined function do_action() in /home/engenhariadopape/www/cursos/wp-content/plugins/tutor/templates/single/course/instructors.php:16 Stack trace: #0 {main} thrown in /home/engenhariadopape/www/cursos/wp-content/plugins/tutor/templates/single/course/instructors.php on line 16