Fatal error: Uncaught Error: Interface 'AC\Middleware' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\RequestHandler\Middleware\ImportJson.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\RequestHandler\Middleware\ImportJson.php on line 10