How to manage dashboard?

Warning: Undefined array key "course" in /home/ja494694/getaccum.com/academy/wp-content/themes/eduma/inc/learnpress-functions.php on line 1390

Fatal error: Uncaught Error: Call to a member function get_id() on null in /home/ja494694/getaccum.com/academy/wp-content/themes/eduma/inc/learnpress-functions.php:1391 Stack trace: #0 /home/ja494694/getaccum.com/academy/wp-includes/class-wp-hook.php(308): show_pass_text('') #1 /home/ja494694/getaccum.com/academy/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #2 /home/ja494694/getaccum.com/academy/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #3 /home/ja494694/getaccum.com/academy/wp-content/themes/eduma/learnpress-v4/content-single-course.php(94): do_action('thim_begin_curr...') #4 /home/ja494694/getaccum.com/academy/wp-content/plugins/learnpress/inc/lp-template-functions.php(878): include('/home/ja494694/...') #5 /home/ja494694/getaccum.com/academy/wp-content/themes/eduma/learnpress-v4/single-course.php(32): learn_press_get_template('content-single-...') #6 /home/ja494694/getaccum.com/academy/wp-includes/template-loader.php(113): include('/home/ja494694/...') #7 /home/ja494694/getaccum.com/academy/wp-blog-header.php(19): require_once('/home/ja494694/...') #8 /home/ja494694/getaccum.com/academy/index.php(17): require('/home/ja494694/...') #9 {main} thrown in /home/ja494694/getaccum.com/academy/wp-content/themes/eduma/inc/learnpress-functions.php on line 1391