Fatal error: Uncaught Error: Class 'AC\Preferences\Site' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\Search\Preferences\SmartFiltering.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\Search\Preferences\SmartFiltering.php on line 8