Fatal error: Uncaught Error: Interface 'ACP\Editing\Storage' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\addons\gravityforms\classes\Editing\Storage\Entry\Checkbox.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\addons\gravityforms\classes\Editing\Storage\Entry\Checkbox.php on line 9