Fatal error: Uncaught Error: Class 'NS_Cloner\WP_Async_Request' not found in C:\xampp\htdocs\wp-content\plugins\ns-cloner-site-copier\lib\wp-background-processing\classes\wp-background-process.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\ns-cloner-site-copier\lib\wp-background-processing\classes\wp-background-process.php on line 16