Fatal error: Uncaught TypeError: TUTOR_PREREQUISITES\Prerequisites::get_prerequisite_course_ids(): Argument #1 ($course_id) must be of type int, null given, called in /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-content/plugins/tutor-pro/addons/tutor-prerequisites/classes/Prerequisites.php on line 114 and defined in /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-content/plugins/tutor-pro/addons/tutor-prerequisites/classes/Prerequisites.php:214 Stack trace: #0 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-content/plugins/tutor-pro/addons/tutor-prerequisites/classes/Prerequisites.php(114): TUTOR_PREREQUISITES\Prerequisites::get_prerequisite_course_ids() #1 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-includes/class-wp-hook.php(341): TUTOR_PREREQUISITES\Prerequisites->prerequisite_redirect() #2 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters() #3 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-includes/plugin.php(522): WP_Hook->do_action() #4 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-content/plugins/tutor/templates/learning-area/index.php(33): do_action() #5 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-includes/template-loader.php(132): include('/homepages/40/d...') #6 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-blog-header.php(19): require_once('/homepages/40/d...') #7 /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/index.php(17): require('/homepages/40/d...') #8 {main} thrown in /homepages/40/d310903207/htdocs/clickandbuilds/NCLEXMadeEasy/wp-content/plugins/tutor-pro/addons/tutor-prerequisites/classes/Prerequisites.php on line 214