Fatal error: Uncaught TypeError: Argument 1 passed to LP_User::has_enrolled_course() must be of the type int, null given, called in /homepages/17/d869101363/htdocs/www1/wp-content/plugins/learnpress/inc/course/lp-course-functions.php on line 268 and defined in /homepages/17/d869101363/htdocs/www1/wp-content/plugins/learnpress/inc/user/class-lp-user.php:206 Stack trace: #0 /homepages/17/d869101363/htdocs/www1/wp-content/plugins/learnpress/inc/course/lp-course-functions.php(268): LP_User->has_enrolled_course(NULL) #1 /homepages/17/d869101363/htdocs/www1/wp-content/themes/course-builder/inc/custom-functions.php(1336): learn_press_is_enrolled_course() #2 /homepages/17/d869101363/htdocs/www1/wp-content/themes/course-builder/inc/extras.php(22): thim_page_title() #3 /homepages/17/d869101363/htdocs/www1/wp-includes/class-wp-hook.php(310): thim_body_classes(Array) #4 /homepages/17/d869101363/htdocs/www1/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #5 /homepages/17/d869101363/htdocs/www1/wp-includes/post-templa in /homepages/17/d869101363/htdocs/www1/wp-content/plugins/learnpress/inc/user/class-lp-user.php on line 206