Fatal error: Uncaught Error: Call to undefined function wp_doing_ajax() in /home/ursatac/public_html/wp-content/plugins/wp-staging-pro/Backend/views/backup/modal/upload.php:20 Stack trace: #0 {main} thrown in /home/ursatac/public_html/wp-content/plugins/wp-staging-pro/Backend/views/backup/modal/upload.php on line 20