Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Validation\Rule" not found in /home/kalbimden/public_html/packages/Webkul/Admin/src/Validations/ProductCategoryUniqueSlug.php:10 Stack trace: #0 {main} thrown in /home/kalbimden/public_html/packages/Webkul/Admin/src/Validations/ProductCategoryUniqueSlug.php on line 10