Fatal error: Uncaught TypeError: json_decode(): Argument #1 ($json) must be of type string, array given in /var/www/wp-content/plugins/learndash-course-grid/includes/class-compatibility.php:62
Stack trace:
#0 /var/www/wp-content/plugins/learndash-course-grid/includes/class-compatibility.php(62): json_decode(Array, true)
#1 /var/www/wp-includes/class-wp-hook.php(324): LearnDash\Course_Grid\Compatibility->elementor_post_extra_course_grids(Array, Object(WP_Post))
#2 /var/www/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array)
#3 /var/www/wp-content/plugins/learndash-course-grid/includes/class-skins.php(404): apply_filters('learndash_cours...', Array, Object(WP_Post))
#4 /var/www/wp-includes/class-wp-hook.php(324): LearnDash\Course_Grid\Skins->enqueue_skin_assets('')
#5 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#6 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /var/www/wp-includes/script-loader.php(2262): do_action('wp_enqueue_scri...')
#8 /var/www/wp-includes/class-wp-hook.php(324): wp_enqueue_scripts('')
#9 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#10 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#11 /var/www/wp-includes/general-template.php(3052): do_action('wp_head')
#12 /var/www/wp-content/themes/astra/header.php(31): wp_head()
#13 /var/www/wp-includes/template.php(790): require_once('/var/www/wp-con...')
#14 /var/www/wp-includes/template.php(725): load_template('/var/www/wp-con...', true, Array)
#15 /var/www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array)
#16 /var/www/wp-content/themes/astra/404.php(15): get_header()
#17 /var/www/wp-includes/template-loader.php(106): include('/var/www/wp-con...')
#18 /var/www/wp-blog-header.php(19): require_once('/var/www/wp-inc...')
#19 /var/www/index.php(17): require('/var/www/wp-blo...')
#20 {main}
thrown in /var/www/wp-content/plugins/learndash-course-grid/includes/class-compatibility.php on line 62
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