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Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, string given in /var/www/html/wp-content/themes/eduma/inc/learnpress-functions.php:392 Stack trace: #0 /var/www/html/wp-content/themes/eduma/inc/learnpress-functions.php(392): array_keys('', 'overview') #1 /var/www/html/wp-includes/class-wp-hook.php(324): thim_course_tabs_content(Array) #2 /var/www/html/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #3 /var/www/html/wp-content/plugins/learnpress/inc/lp-template-functions.php(112): apply_filters('learn-press/cou...', Array) #4 /var/www/html/wp-content/themes/eduma/learnpress-v4/single-course/tabs/tabs-landing.php(17): learn_press_get_course_tabs() #5 /var/www/html/wp-content/plugins/learnpress/inc/lp-template-functions.php(885): include('/var/www/html/w...') #6 /var/www/html/wp-content/themes/eduma/inc/learnpress-functions.php(859): learn_press_get_template('single-course/t...') #7 /var/www/html/wp-includes/class-wp-hook.php(324): thim_landing_tabs('') #8 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #9 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /var/www/html/wp-content/plugins/learnpress/templates/single-course/content.php(16): do_action('learn-press/cou...') #11 /var/www/html/wp-content/plugins/learnpress/inc/lp-template-functions.php(885): include('/var/www/html/w...') #12 /var/www/html/wp-content/plugins/learnpress/inc/templates/abstract-template.php(264): learn_press_get_template('single-course/c...', Array) #13 /var/www/html/wp-includes/class-wp-hook.php(324): LP_Template_Callback->callback('') #14 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #15 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #16 /var/www/html/wp-content/themes/eduma/learnpress-v4/content-single-course.php(159): do_action('learn-press/sin...') #17 /var/www/html/wp-content/plugins/learnpress/inc/lp-template-functions.php(885): include('/var/www/html/w...') #18 /var/www/html/wp-content/themes/eduma/learnpress-v4/single-course.php(32): learn_press_get_template('content-single-...') #19 /var/www/html/wp-includes/template-loader.php(106): include('/var/www/html/w...') #20 /var/www/html/wp-blog-header.php(19): require_once('/var/www/html/w...') #21 /var/www/html/index.php(17): require('/var/www/html/w...') #22 {main} thrown in /var/www/html/wp-content/themes/eduma/inc/learnpress-functions.php on line 392