Fatal error: Uncaught Error: Call to undefined function the_sub_title() in /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-content/plugins/vibe-course-module/includes/templates/course/index.php:28 Stack trace: #0 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-includes/template.php(730): require_once() #1 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-content/plugins/buddypress/bp-core/bp-core-catchuri.php(493): load_template('/home/customer/...') #2 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-content/plugins/vibe-course-module/includes/bp-course-screens.php(29): bp_core_load_template('course/index') #3 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-includes/class-wp-hook.php(287): bp_course_directory_setup('') #4 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #5 /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-includes/plug in /home/customer/www/teachingenglishlanguagearts.com/public_html/wp-content/plugins/vibe-course-module/includes/templates/course/index.php on line 28