Fatal error: Uncaught Error: Call to undefined function html_class() in /home3/zahraba1/public_html/wp-content/themes/edumall/header.php:14 Stack trace: #0 /home3/zahraba1/public_html/wp-includes/template.php(783): require_once() #1 /home3/zahraba1/public_html/wp-includes/template.php(718): load_template('/home3/zahraba1...', true, Array) #2 /home3/zahraba1/public_html/wp-content/plugins/elementor-pro/modules/theme-builder/classes/theme-support.php(86): locate_template(Array, true) #3 /home3/zahraba1/public_html/wp-includes/class-wp-hook.php(310): ElementorPro\Modules\ThemeBuilder\Classes\Theme_Support->get_header('') #4 /home3/zahraba1/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #5 /home3/zahraba1/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home3/zahraba1/public_html/wp-includes/general-template.php(38): do_action('get_header', NULL, Array) #7 /home3/zahraba1/public_html/wp-content/themes/edumall/page.php(15): get_header() #8 /home3/zahraba1/public_html/wp- in /home3/zahraba1/public_html/wp-content/themes/edumall/header.php on line 14