Fatal error: Uncaught Error: Class 'AC\Column' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\addons\gravityforms\classes\Column\Entry\Custom\User.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\addons\gravityforms\classes\Column\Entry\Custom\User.php on line 10