Fatal error: Uncaught Error: Call to a member function get() on null in /home/kleafspublishing/public_html/wp-content/plugins/learnpress/inc/custom-post-types/course.php:158 Stack trace: #0 /home/kleafspublishing/public_html/wp-includes/class-wp-hook.php(307): LP_Course_Post_Type->register_taxonomy('') #1 /home/kleafspublishing/public_html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #2 /home/kleafspublishing/public_html/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #3 /home/kleafspublishing/public_html/wp-settings.php(587): do_action('init') #4 /home/kleafspublishing/public_html/wp-config.php(170): require_once('/home/kleafspub...') #5 /home/kleafspublishing/public_html/wp-load.php(50): require_once('/home/kleafspub...') #6 /home/kleafspublishing/public_html/wp-blog-header.php(13): require_once('/home/kleafspub...') #7 /home/kleafspublishing/public_html/index.php(17): require('/home/kleafspub...') #8 {main} thrown in /home/kleafspublishing/public_html/wp-content/plugins/learnpress/inc/custom-post-types/course.php on line 158