Fatal error: Uncaught Error: Call to a member function sections() on bool in /homepages/14/d871110798/htdocs/wp-content/plugins/memberpress-courses/app/helpers/Courses.php:361 Stack trace: #0 /homepages/14/d871110798/htdocs/wp-content/plugins/memberpress-courses/app/views/classroom/courses_sidebar.php(33): memberpress\courses\helpers\Courses::display_course_overview(false, true) #1 /homepages/14/d871110798/htdocs/wp-content/plugins/memberpress-courses/app/helpers/Courses.php(294): require('/homepages/14/d...') #2 /homepages/14/d871110798/htdocs/wp-content/plugins/memberpress-courses/app/views/classroom/courses_single_lesson.php(21): memberpress\courses\helpers\Courses::get_classroom_sidebar(Object(WP_Post)) #3 /homepages/14/d871110798/htdocs/wp-includes/template-loader.php(106): include('/homepages/14/d...') #4 /homepages/14/d871110798/htdocs/wp-blog-header.php(19): require_once('/homepages/14/d...') #5 /homepages/14/d871110798/htdocs/index.php(17): require('/homepages/14/d...') #6 {main} thrown in /homepages/14/d871110798/htdocs/wp-content/plugins/memberpress-courses/app/helpers/Courses.php on line 361