Fatal error: Uncaught Error: Class 'WP_Customize_Section' not found in /opt/lampp/htdocs/anychinavisa/job/backup/wp-includes/customize/class-wp-customize-sidebar-section.php:17 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/anychinavisa/job/backup/wp-includes/customize/class-wp-customize-sidebar-section.php on line 17